diff --git a/kernel/module.c b/kernel/module.c
index 5ee6599..bf4dcca 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2098,8 +2098,10 @@
 	if (!best)
 		return NULL;
 
-	*size = nextval - mod->symtab[best].st_value;
-	*offset = addr - mod->symtab[best].st_value;
+	if (size)
+		*size = nextval - mod->symtab[best].st_value;
+	if (offset)
+		*offset = addr - mod->symtab[best].st_value;
 	return mod->strtab + mod->symtab[best].st_name;
 }