diff --git a/src/autocomplete.h b/src/autocomplete.h
index de27947..1d5939b 100644
--- a/src/autocomplete.h
+++ b/src/autocomplete.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_AUTOCOMPLETE_H_
-#define JUCI_AUTOCOMPLETE_H_
+#pragma once
 #include "dispatcher.h"
 #include "tooltips.h"
 #include <atomic>
@@ -57,5 +56,3 @@ public:
 private:
   void setup_dialog();
 };
-
-#endif // JUCI_AUTOCOMPLETE_H_
diff --git a/src/cmake.h b/src/cmake.h
index 462bd31..f87010a 100644
--- a/src/cmake.h
+++ b/src/cmake.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_CMAKE_H_
-#define JUCI_CMAKE_H_
+#pragma once
 #include <boost/filesystem.hpp>
 #include <vector>
 #include <unordered_map>
@@ -29,4 +28,3 @@ private:
   std::vector<std::pair<boost::filesystem::path, std::vector<std::string> > > get_functions_parameters(const std::string &name);
   bool parsed=false;
 };
-#endif //JUCI_CMAKE_H_
diff --git a/src/compile_commands.h b/src/compile_commands.h
index 4dc77f9..642cd33 100644
--- a/src/compile_commands.h
+++ b/src/compile_commands.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_COMPILE_COMMANDS_H_
-#define JUCI_COMPILE_COMMANDS_H_
-
+#pragma once
 #include <boost/filesystem.hpp>
 #include <vector>
 #include <string>
@@ -22,5 +20,3 @@ public:
   /// Return arguments for the given file using libclangmm
   static std::vector<std::string> get_arguments(const boost::filesystem::path &build_path, const boost::filesystem::path &file_path);
 };
-
-#endif // JUCI_COMPILE_COMMANDS_H_
diff --git a/src/config.h b/src/config.h
index d357ec1..42b0b18 100644
--- a/src/config.h
+++ b/src/config.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_CONFIG_H_
-#define JUCI_CONFIG_H_
+#pragma once
 #include <boost/property_tree/json_parser.hpp>
 #include <boost/filesystem.hpp>
 #include <unordered_map>
@@ -123,4 +122,3 @@ private:
   bool remove_deprecated_nodes(boost::property_tree::ptree &cfg, const boost::property_tree::ptree &default_cfg, std::string parent_path="");
   void read(const boost::property_tree::ptree &cfg);
 };
-#endif
diff --git a/src/ctags.h b/src/ctags.h
index e896a19..f39ddfb 100644
--- a/src/ctags.h
+++ b/src/ctags.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_CTAGS_H_
-#define JUCI_CTAGS_H_
+#pragma once
 #include <string>
 #include <boost/filesystem.hpp>
 #include <sstream>
@@ -26,5 +25,3 @@ public:
 private:
   static std::vector<std::string> get_type_parts(const std::string type);
 };
-
-#endif //JUCI_CTAGS_H_
diff --git a/src/debug_lldb.h b/src/debug_lldb.h
index 7716518..71934cc 100644
--- a/src/debug_lldb.h
+++ b/src/debug_lldb.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_DEBUG_CLANG_H_
-#define JUCI_DEBUG_CLANG_H_
-
+#pragma once
 #include <boost/filesystem.hpp>
 #include <list>
 #include <lldb/API/LLDB.h>
@@ -88,5 +86,3 @@ namespace Debug {
     size_t buffer_size;
   };
 }
-
-#endif
diff --git a/src/dialogs.h b/src/dialogs.h
index f93d3ff..e1deeb5 100644
--- a/src/dialogs.h
+++ b/src/dialogs.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_DIALOG_H_
-#define JUCI_DIALOG_H_
+#pragma once
 #include <string>
 #include <boost/filesystem.hpp>
 #include <vector>
@@ -25,5 +24,3 @@ private:
                           const std::vector<std::pair<std::string, Gtk::ResponseType>> &buttons,
                           Gtk::FileChooserAction gtk_options);
 };
-
-#endif //JUCI_DIALOG_H_
diff --git a/src/directories.h b/src/directories.h
index 5831185..4a06e70 100644
--- a/src/directories.h
+++ b/src/directories.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_DIRECTORIES_H_
-#define JUCI_DIRECTORIES_H_
-
+#pragma once
 #include <gtkmm.h>
 #include <vector>
 #include <string>
@@ -94,5 +92,3 @@ private:
   Gtk::MenuItem menu_root_item_new_folder;
   boost::filesystem::path menu_popup_row_path;
 };
-
-#endif  // JUCI_DIRECTORIES_H_
diff --git a/src/dispatcher.h b/src/dispatcher.h
index bb38f20..4a3b7e0 100644
--- a/src/dispatcher.h
+++ b/src/dispatcher.h
@@ -1,5 +1,4 @@
-#ifndef DISPATCHER_H_
-#define	DISPATCHER_H_
+#pragma once
 #include <gtkmm.h>
 #include <mutex>
 #include <list>
@@ -25,5 +24,3 @@ public:
   
   void disconnect();
 };
-
-#endif	/* DISPATCHER_H_ */
diff --git a/src/entrybox.h b/src/entrybox.h
index 3393d59..3a722be 100644
--- a/src/entrybox.h
+++ b/src/entrybox.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_ENTRYBOX_H_
-#define JUCI_ENTRYBOX_H_
-
+#pragma once
 #include <list>
 #include <functional>
 #include "gtkmm.h"
@@ -54,5 +52,3 @@ public:
 private:
   static std::unordered_map<std::string, std::vector<std::string> > entry_histories;
 };
-
-#endif  // JUCI_ENTRYBOX_H_
diff --git a/src/files.h b/src/files.h
index 3cee740..ab7d9e8 100644
--- a/src/files.h
+++ b/src/files.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_FILES_H_
-#define JUCI_FILES_H_
+#pragma once
 #include <string>
 
 /// If you add or remove nodes from the default_config_file, increase the juci
@@ -406,5 +405,3 @@ const std::string juci_dark_blue_style = R"RAW(<?xml version="1.0" encoding="UTF
 
 </style-scheme>
 )RAW";
-
-#endif  // JUCI_FILES_H_
diff --git a/src/filesystem.h b/src/filesystem.h
index 2b6d40a..70a8a3f 100644
--- a/src/filesystem.h
+++ b/src/filesystem.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_FILESYSTEM_H_
-#define JUCI_FILESYSTEM_H_
+#pragma once
 #include <vector>
 #include <string>
 #include <boost/filesystem.hpp>
@@ -35,4 +34,3 @@ public:
   /// Return executable with latest version in filename on systems that is lacking executable_name symbolic link
   static boost::filesystem::path get_executable(const boost::filesystem::path &executable_name) noexcept;
 };
-#endif  // JUCI_FILESYSTEM_H_
diff --git a/src/git.h b/src/git.h
index a8f7bfb..6b44928 100644
--- a/src/git.h
+++ b/src/git.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_GIT_H_
-#define JUCI_GIT_H_
+#pragma once
 #include <git2.h>
 #include <mutex>
 #include <memory>
@@ -97,4 +96,3 @@ private:
 public:
   static std::shared_ptr<Repository> get_repository(const boost::filesystem::path &path);
 };
-#endif //JUCI_GIT_H_
diff --git a/src/info.h b/src/info.h
index 8bb78c7..38bc841 100644
--- a/src/info.h
+++ b/src/info.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_INFO_H_
-#define JUCI_INFO_H_
-
+#pragma once
 #include <gtkmm.h>
 
 class Info : public Gtk::InfoBar {
@@ -17,5 +15,3 @@ private:
   Gtk::Label label;
   sigc::connection timeout_connection;
 };
-
-#endif // JUCI_INFO_H_
\ No newline at end of file
diff --git a/src/juci.h b/src/juci.h
index b56033f..39dd9b2 100644
--- a/src/juci.h
+++ b/src/juci.h
@@ -1,3 +1,4 @@
+#pragma once
 /**
    \mainpage
    juCi++ is a lightweight C++ IDE written in C++
@@ -24,10 +25,6 @@
    [juCi++] --> [tiny-process-library] : use
   \enduml
 */
-
-#ifndef JUCI_JUCI_H_
-#define JUCI_JUCI_H_
-
 #include <gtkmm.h>
 #include <boost/filesystem.hpp>
 
@@ -42,6 +39,3 @@ private:
   std::vector<std::pair<boost::filesystem::path, size_t> > files;
   std::vector<std::string> errors;
 };
-
-#endif // JUCI_JUCI_H_
-
diff --git a/src/menu.h b/src/menu.h
index 9d259b0..eab6cd6 100644
--- a/src/menu.h
+++ b/src/menu.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_MENU_H_
-#define JUCI_MENU_H_
-
+#pragma once
 #include <string>
 #include <unordered_map>
 #include <gtkmm.h>
@@ -26,4 +24,3 @@ public:
 private:
   Glib::RefPtr<Gtk::Builder> builder;
 };
-#endif  // JUCI_MENU_H_
diff --git a/src/meson.h b/src/meson.h
index 895ac63..264afb1 100644
--- a/src/meson.h
+++ b/src/meson.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_MESON_H_
-#define JUCI_MESON_H_
-
+#pragma once
 #include <boost/filesystem.hpp>
 #include <vector>
 
@@ -15,5 +13,3 @@ public:
   
   boost::filesystem::path get_executable(const boost::filesystem::path &build_path, const boost::filesystem::path &file_path);
 };
-
-#endif //JUCI_MESON_H_
diff --git a/src/notebook.h b/src/notebook.h
index 3c08670..70bcfa6 100644
--- a/src/notebook.h
+++ b/src/notebook.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_NOTEBOOK_H_
-#define JUCI_NOTEBOOK_H_
-
+#pragma once
 #include <iostream>
 #include "gtkmm.h"
 #include "source.h"
@@ -89,4 +87,3 @@ private:
   
   bool save_modified_dialog(size_t index);
 };
-#endif  // JUCI_NOTEBOOK_H_
diff --git a/src/project.h b/src/project.h
index 6b06c6d..600866c 100644
--- a/src/project.h
+++ b/src/project.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_PROJECT_H_
-#define JUCI_PROJECT_H_
-
+#pragma once
 #include <gtkmm.h>
 #include <boost/filesystem.hpp>
 #include <atomic>
@@ -142,5 +140,3 @@ namespace Project {
   std::shared_ptr<Base> create();
   extern std::shared_ptr<Base> current;
 };
-
-#endif  // JUCI_PROJECT_H_
diff --git a/src/project_build.h b/src/project_build.h
index 6c476e4..ea13c74 100644
--- a/src/project_build.h
+++ b/src/project_build.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_PROJECT_BUILD_H_
-#define JUCI_PROJECT_BUILD_H_
-
+#pragma once
 #include <boost/filesystem.hpp>
 #include "cmake.h"
 #include "meson.h"
@@ -45,5 +43,3 @@ namespace Project {
     boost::filesystem::path get_executable(const boost::filesystem::path &path) override;
   };
 }
-
-#endif // JUCI_PROJECT_BUILD_H_
diff --git a/src/selection_dialog.h b/src/selection_dialog.h
index e2343fa..457fd37 100644
--- a/src/selection_dialog.h
+++ b/src/selection_dialog.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_SELECTIONDIALOG_H_
-#define JUCI_SELECTIONDIALOG_H_
-
+#pragma once
 #include "gtkmm.h"
 #include <unordered_map>
 
@@ -96,5 +94,3 @@ private:
   int show_offset;
   bool row_in_entry=false;
 };
-
-#endif  // JUCI_SELECTIONDIALOG_H_
\ No newline at end of file
diff --git a/src/source.h b/src/source.h
index f5ad575..38f450e 100644
--- a/src/source.h
+++ b/src/source.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_SOURCE_H_
-#define JUCI_SOURCE_H_
+#pragma once
 #include "source_spellcheck.h"
 #include "source_diff.h"
 #include "tooltips.h"
@@ -184,4 +183,3 @@ namespace Source {
     void parse_language_file(Glib::RefPtr<CompletionBuffer> &completion_buffer, bool &has_context_class, const boost::property_tree::ptree &pt);
   };
 }
-#endif  // JUCI_SOURCE_H_
diff --git a/src/source_clang.h b/src/source_clang.h
index 3c0ec3e..d347c6a 100644
--- a/src/source_clang.h
+++ b/src/source_clang.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_SOURCE_CLANG_H_
-#define JUCI_SOURCE_CLANG_H_
-
+#pragma once
 #include <thread>
 #include <atomic>
 #include <mutex>
@@ -114,5 +112,3 @@ namespace Source {
     bool full_reparse_running=false;
   };
 }
-
-#endif  // JUCI_SOURCE_CLANG_H_
diff --git a/src/source_diff.h b/src/source_diff.h
index ab6034f..61cbfc0 100644
--- a/src/source_diff.h
+++ b/src/source_diff.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_SOURCE_DIFF_H_
-#define JUCI_SOURCE_DIFF_H_
+#pragma once
 #include <gtksourceviewmm.h>
 #include <boost/filesystem.hpp>
 #include "dispatcher.h"
@@ -74,5 +73,3 @@ namespace Source {
     void update_lines();
   };
 }
-
-#endif //JUCI_SOURCE_DIFF_H_
diff --git a/src/source_spellcheck.h b/src/source_spellcheck.h
index b456485..c1381db 100644
--- a/src/source_spellcheck.h
+++ b/src/source_spellcheck.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_SOURCE_SPELLCHECK_H_
-#define JUCI_SOURCE_SPELLCHECK_H_
+#pragma once
 #include <gtksourceviewmm.h>
 #include <aspell.h>
 
@@ -46,5 +45,3 @@ namespace Source {
     void spellcheck(const Gtk::TextIter& start, const Gtk::TextIter& end);
   };
 }
-
-#endif //JUCI_SOURCE_SPELLCHECK_H_
diff --git a/src/terminal.h b/src/terminal.h
index 2b1628e..af7ebcb 100644
--- a/src/terminal.h
+++ b/src/terminal.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_TERMINAL_H_
-#define JUCI_TERMINAL_H_
-
+#pragma once
 #include <mutex>
 #include <functional>
 #include "gtkmm.h"
@@ -50,5 +48,3 @@ private:
   std::mutex processes_mutex;
   Glib::ustring stdin_buffer;
 };
-
-#endif  // JUCI_TERMINAL_H_
diff --git a/src/tooltips.h b/src/tooltips.h
index 918be7f..ff24ae2 100644
--- a/src/tooltips.h
+++ b/src/tooltips.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_TOOLTIPS_H_
-#define JUCI_TOOLTIPS_H_
+#pragma once
 #include "gtkmm.h"
 #include <string>
 #include <list>
@@ -47,5 +46,3 @@ public:
 private:
   std::list<Tooltip> tooltip_list;
 };
-
-#endif  // JUCI_TOOLTIPS_H_
diff --git a/src/usages_clang.h b/src/usages_clang.h
index 8ba1705..46ab254 100644
--- a/src/usages_clang.h
+++ b/src/usages_clang.h
@@ -1,5 +1,4 @@
-#ifndef JUCI_USAGES_CLANG_H_
-#define JUCI_USAGES_CLANG_H_
+#pragma once
 #include "clangmm.h"
 #include <atomic>
 #include <boost/archive/text_iarchive.hpp>
@@ -148,4 +147,3 @@ namespace Usages {
     static Cache read_cache(const boost::filesystem::path &project_path, const boost::filesystem::path &build_path, const boost::filesystem::path &path);
   };
 } // namespace Usages
-#endif // JUCI_USAGES_CLANG_H_
diff --git a/src/window.h b/src/window.h
index 1ec5d33..f71ce83 100644
--- a/src/window.h
+++ b/src/window.h
@@ -1,6 +1,4 @@
-#ifndef JUCI_WINDOW_H_
-#define JUCI_WINDOW_H_
-
+#pragma once
 #include <gtkmm.h>
 #include <atomic>
 
@@ -36,5 +34,3 @@ private:
   bool regex_search=false;
   bool search_entry_shown=false;
 };
-
-#endif  // JUCI_WINDOW_H