diff --git a/src/lluadef.h b/src/lluadef.h
index 1bba993..2807fb9 100644
--- a/src/lluadef.h
+++ b/src/lluadef.h
@@ -15,13 +15,13 @@
 #endif
 
 #define LLUA_INVALID_PARAMETER() { \
-  LLUA_DEBUG("[%s] Invalid parameter (%s:%d)", __func__, __FILE__, __LINE__); \
+  luaL_error(L, "Invalid parameter for %s.", __func__); \
   return 0; \
 }
 
 #define LLUA_MIN_ARGS(n) \
   if(lua_gettop(L) < n) { \
-    LLUA_DEBUG("[%s] Too few arguments (%s:%d)", __func__, __FILE__, __LINE__); \
+    luaL_error(L, "Too few arguments for %s.", __func__); \
     return 0; \
   }
 #else /* NODEBUG. */