diff --git a/lib/memory.h b/lib/memory.h
index 1ffda55..3ef0f48 100644
--- a/lib/memory.h
+++ b/lib/memory.h
@@ -268,6 +268,6 @@
 		     int line,
 		     int type,
 		     const char *str);
-void memory_init ();
+void memory_init (void);
 
 #endif /* _ZEBRA_MEMORY_H */