1 files changed, 3 insertions, 4 deletions
diff --git a/src/wasm-interpreter.h b/src/wasm-interpreter.h
index 69434a297..10b84a82f 100644
--- a/src/wasm-interpreter.h
+++ b/src/wasm-interpreter.h
@@ -1350,12 +1350,11 @@ public:
       case RefIsNull:
         return Literal(value.isNull());
       case RefIsFunc:
-        return Literal(!value.isNull() && value.type.isFunction());
+        return Literal(value.type.isFunction());
       case RefIsData:
-        return Literal(!value.isNull() && value.isData());
+        return Literal(value.isData());
       case RefIsI31:
-        return Literal(!value.isNull() &&
-                       value.type.getHeapType() == HeapType::i31);
+        return Literal(value.type.getHeapType() == HeapType::i31);
       default:
         WASM_UNREACHABLE("unimplemented ref.is_*");
     }