1 files changed, 6 insertions, 2 deletions
diff --git a/src/wasm-type.h b/src/wasm-type.h
index 6e74f0338..cfd47a8e0 100644
--- a/src/wasm-type.h
+++ b/src/wasm-type.h
@@ -173,14 +173,18 @@ std::ostream& operator<<(std::ostream& os, Signature t);
 
 } // namespace wasm
 
-template<> class std::hash<wasm::Type> {
+namespace std {
+
+template<> class hash<wasm::Type> {
 public:
   size_t operator()(const wasm::Type& type) const;
 };
 
-template<> class std::hash<wasm::Signature> {
+template<> class hash<wasm::Signature> {
 public:
   size_t operator()(const wasm::Signature& sig) const;
 };
 
+} // namespace std
+
 #endif // wasm_wasm_type_h