diff --git a/lib/mes/div.c b/lib/mes/div.c
index 688fa4dd..a192a96c 100644
--- a/lib/mes/div.c
+++ b/lib/mes/div.c
@@ -33,6 +33,10 @@ struct ldiv_t
 
 int __raise (int);
 
+#if __TINYC__
+#define __raise(x) -1
+#endif
+
 void
 __mesabi_div0 (void)
 {