diff --git a/common/file_fetcher.h b/common/file_fetcher.h
index 0f034e3..cc0e880 100644
--- a/common/file_fetcher.h
+++ b/common/file_fetcher.h
@@ -37,7 +37,7 @@
   // Returns whether the passed url is supported.
   static bool SupportedUrl(const std::string& url);
 
-  FileFetcher() : HttpFetcher(nullptr) {}
+  FileFetcher() : HttpFetcher() {}
 
   // Cleans up all internal state. Does not notify delegate.
   ~FileFetcher() override;