diff --git a/omaha_request_params.h b/omaha_request_params.h
index 131a8f3..b6b6f04 100644
--- a/omaha_request_params.h
+++ b/omaha_request_params.h
@@ -95,7 +95,7 @@
     mutable_image_props_.is_powerwash_allowed = false;
   }
 
-  virtual ~OmahaRequestParams() = default;
+  virtual ~OmahaRequestParams();
 
   // Setters and getters for the various properties.
   inline std::string os_platform() const { return os_platform_; }