diff --git a/after/syntax/c.vim b/after/syntax/c.vim
index 9775b13..fd5b0f5 100644
--- a/after/syntax/c.vim
+++ b/after/syntax/c.vim
@@ -32,7 +32,7 @@ if !exists('c_no_operators')
 
   " Match: (expr) ? true : false;
   "               ^      ^
-  syn region cOperatorTernary matchgroup=cOperator start='?' end=':' transparent display
+  syn region cOperatorTernary matchgroup=cOperator start='?' end='::\@!' transparent display
 endif
 
 let g:c_doxygen = get(g:, 'c_doxygen', 1)