diff --git a/src/sbbs3/sbbs.h b/src/sbbs3/sbbs.h
index 9bceee2c83a0a0a2b80060b1ff40a8ee50777f8e..4c8a6efff88b3896ac13573d79c0b2af10deda65 100644
--- a/src/sbbs3/sbbs.h
+++ b/src/sbbs3/sbbs.h
@@ -942,6 +942,9 @@ extern "C" {
 		 JSTYPE_ARRAY=JSTYPE_LIMIT
 		,JSTYPE_ALIAS
 		,JSTYPE_UNDEF
+#if !defined(JSTYPE_NULL)	/* JSTYPE_NULL was removed after 1.5 rc 6a (?) */
+		,JSTYPE_NULL
+#endif
 	};
 
 	#ifdef BUILD_JSDOCS	/* String compiled into debug build only, for JS documentation generation */