diff --git a/direct/src/dcparser/dcParserDefs.h b/direct/src/dcparser/dcParserDefs.h
index e7fe84f442..11ec419449 100644
--- a/direct/src/dcparser/dcParserDefs.h
+++ b/direct/src/dcparser/dcParserDefs.h
@@ -17,7 +17,7 @@
 ////////////////////////////////////////////////////////////////////
 
 #ifndef DCPARSERDEFS_H
-#define DCPARSERDEFs_H
+#define DCPARSERDEFS_H
 
 #include "dcbase.h"
 #include "dcSubatomicType.h"