diff --git a/sdk/core/azure-core/src/http/http.cpp b/sdk/core/azure-core/src/http/http.cpp
index cedc4d83c..93f6d2651 100644
--- a/sdk/core/azure-core/src/http/http.cpp
+++ b/sdk/core/azure-core/src/http/http.cpp
@@ -8,6 +8,7 @@
 
 #include <utility>
 
+using namespace Azure::Core;
 using namespace Azure::Core::Http;
 using namespace Azure::Core::IO::_internal;