diff --git a/harbour/source/rtl/errorapi.c b/harbour/source/rtl/errorapi.c
index 335cd1a246..7808b4efe6 100644
--- a/harbour/source/rtl/errorapi.c
+++ b/harbour/source/rtl/errorapi.c
@@ -3,7 +3,7 @@
  */
 
 #include <extend.h>
-#include <CToHarb.h>
+#include <ctoharb.h>
 
 extern ITEM errorBlock;
 extern STACK stack;