diff --git a/sdk/core/azure-core/src/http/request.cpp b/sdk/core/azure-core/src/http/request.cpp
index 44f1a3db6..954841d6c 100644
--- a/sdk/core/azure-core/src/http/request.cpp
+++ b/sdk/core/azure-core/src/http/request.cpp
@@ -9,6 +9,7 @@
 #include <string>
 #include <vector>
 
+using namespace Azure::Core;
 using namespace Azure::Core::Http;
 using namespace Azure::Core::IO::_internal;