diff --git a/SWIG/Source/Swig/typemap.c b/SWIG/Source/Swig/typemap.c
index a47e14b95..9001b4b28 100644
--- a/SWIG/Source/Swig/typemap.c
+++ b/SWIG/Source/Swig/typemap.c
@@ -700,6 +700,7 @@ int check_locals(ParmList *p, const char *s) {
     if (strstr(c,s)) return 1;
     p = nextSibling(p);
   }
+  return 0;
 }
 
 static