diff --git a/src/libCom/misc/dbDefs.h b/src/libCom/misc/dbDefs.h
index 82e31988c..91025a5f8 100644
--- a/src/libCom/misc/dbDefs.h
+++ b/src/libCom/misc/dbDefs.h
@@ -16,11 +16,6 @@
 #ifndef INCdbDefsh
 #define INCdbDefsh 1
 
-#if     defined(NULL)
-#undef NULL
-#endif
-#define NULL    0
-
 #if     defined(NO)
 #undef NO
 #endif