diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 1641915a8..84995ab6e 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -26,7 +26,6 @@
 #include "symboldatabase.h"
 #include "templatesimplifier.h"
 #include "timer.h"
-#include "checknullpointer.h"   // isUpper
 
 #include <cstring>
 #include <sstream>