diff --git a/src/source_clang.cc b/src/source_clang.cc
index ca1dd02..8668178 100644
--- a/src/source_clang.cc
+++ b/src/source_clang.cc
@@ -13,7 +13,6 @@
 #include "info.h"
 #include "selection_dialog.h"
 #include "usages_clang.h"
-#include <algorithm>
 
 const std::regex include_regex(R"(^[ \t]*#[ \t]*include[ \t]*[<"]([^<>"]+)[>"].*$)");