1 files changed, 1 insertions, 1 deletions
diff --git a/src/wasm-type.h b/src/wasm-type.h
index 542d26263..0d0b49c70 100644
--- a/src/wasm-type.h
+++ b/src/wasm-type.h
@@ -267,7 +267,7 @@ public:
     // Iterator traits
     using iterator_category = std::random_access_iterator_tag;
     using value_type = Type;
-    using difference_type = long;
+    using difference_type = std::ptrdiff_t;
     using pointer = const Type*;
     using reference = const Type&;