diff --git a/src/source_clang.cpp b/src/source_clang.cpp
index c0bb4f7..2d87481 100644
--- a/src/source_clang.cpp
+++ b/src/source_clang.cpp
@@ -858,19 +858,19 @@ Source::ClangViewAutocomplete::ClangViewAutocomplete(const boost::filesystem::pa
   autocomplete.run_check = [this]() {
     auto iter = get_buffer()->get_insert()->get_iter();
     auto prefix_end = iter;
-    iter.backward_char();
-    if(!is_code_iter(iter))
+
+    size_t count = 0;
+    while(iter.backward_char() && is_token_char(*iter))
+      ++count;
+
+    if(count == 0)
       return false;
 
     enable_snippets = false;
     show_parameters = false;
 
-    size_t count = 0;
-    while(is_token_char(*iter) && iter.backward_char())
-      ++count;
-
     auto prefix_start = iter;
-    if(prefix_start != prefix_end)
+    if(prefix_start != prefix_end && !is_token_char(*iter))
       prefix_start.forward_char();
 
     auto previous = iter;
diff --git a/src/source_generic.cpp b/src/source_generic.cpp
index b56a22a..b43c29e 100644
--- a/src/source_generic.cpp
+++ b/src/source_generic.cpp
@@ -206,10 +206,15 @@ void Source::GenericView::setup_autocomplete() {
   autocomplete.run_check = [this]() {
     auto start = get_buffer()->get_insert()->get_iter();
     auto end = start;
+
     size_t count = 0;
     while(start.backward_char() && is_token_char(*start))
       ++count;
-    if((start.is_start() || start.forward_char()) && count >= 3 && !(*start >= '0' && *start <= '9')) {
+
+    if(!is_token_char(*start))
+      start.forward_char();
+
+    if(count >= 3 && !(*start >= '0' && *start <= '9')) {
       LockGuard lock1(autocomplete.prefix_mutex);
       LockGuard lock2(buffer_words_mutex);
       autocomplete.prefix = get_buffer()->get_text(start, end);
diff --git a/src/source_language_protocol.cpp b/src/source_language_protocol.cpp
index f337d48..f67b0c4 100644
--- a/src/source_language_protocol.cpp
+++ b/src/source_language_protocol.cpp
@@ -1632,19 +1632,19 @@ void Source::LanguageProtocolView::setup_autocomplete() {
   autocomplete->run_check = [this, is_possible_jsx_property]() {
     auto iter = get_buffer()->get_insert()->get_iter();
     auto prefix_end = iter;
-    iter.backward_char();
-    if(!is_code_iter(iter))
+
+    size_t count = 0;
+    while(iter.backward_char() && is_token_char(*iter))
+      ++count;
+
+    if(count == 0)
       return false;
 
     autocomplete_enable_snippets = false;
     autocomplete_show_arguments = false;
 
-    size_t count = 0;
-    while(is_token_char(*iter) && iter.backward_char())
-      ++count;
-
     auto prefix_start = iter;
-    if(prefix_start != prefix_end)
+    if(prefix_start != prefix_end && !is_token_char(*iter))
       prefix_start.forward_char();
 
     auto previous = iter;