diff --git a/decorate.c b/decorate.c
index 2f8a63e38881587fe29fcb72a5272ef54b9efa6e..7cb5d29a89a43ecf7e433db513b66184df3accb8 100644
--- a/decorate.c
+++ b/decorate.c
@@ -49,7 +49,7 @@ static void grow_decoration(struct decoration *n)
 		const struct object *base = old_hash[i].base;
 		void *decoration = old_hash[i].decoration;
 
-		if (!base)
+		if (!decoration)
 			continue;
 		insert_decoration(n, base, decoration);
 	}