diff --git a/core/local_vector.h b/core/local_vector.h
index b09a28b25a6..7f96b25f8bb 100644
--- a/core/local_vector.h
+++ b/core/local_vector.h
@@ -75,7 +75,7 @@ public:
 	}
 
 	void erase(const T &p_val) {
-		U idx = find(p_val);
+		int64_t idx = find(p_val);
 		if (idx >= 0) {
 			remove(idx);
 		}