diff --git a/tiny_gltf.h b/tiny_gltf.h
index dc5ba83..9fd1ee7 100644
--- a/tiny_gltf.h
+++ b/tiny_gltf.h
@@ -3671,7 +3671,8 @@ static bool ParseParameterProperty(Parameter *param, std::string *err,
     // Found a number array.
     return true;
   } else if (ParseNumberProperty(&param->number_value, err, o, prop, false)) {
-    return param->has_number_value = true;
+    param->has_number_value = true;
+    return true;
   } else if (ParseJSONProperty(&param->json_double_value, err, o, prop,
                                false)) {
     return true;