diff --git a/pxr/imaging/plugin/hioOiio/metadata.cpp b/pxr/imaging/plugin/hioOiio/metadata.cpp
index 938ce06c605..f22527c1d56 100644
--- a/pxr/imaging/plugin/hioOiio/metadata.cpp
+++ b/pxr/imaging/plugin/hioOiio/metadata.cpp
@@ -18,7 +18,7 @@ PXR_NAMESPACE_OPEN_SCOPE
 class TfToken;
 class VtValue;
 
-OIIO_NAMESPACE_USING
+using namespace OIIO;
 
 bool
 HioOIIO_ExtractCustomMetadata(
diff --git a/pxr/imaging/plugin/hioOiio/oiioImage.cpp b/pxr/imaging/plugin/hioOiio/oiioImage.cpp
index 675374c0059..9d88256d466 100644
--- a/pxr/imaging/plugin/hioOiio/oiioImage.cpp
+++ b/pxr/imaging/plugin/hioOiio/oiioImage.cpp
@@ -33,7 +33,7 @@ ARCH_PRAGMA_POP
 
 PXR_NAMESPACE_OPEN_SCOPE
 
-OIIO_NAMESPACE_USING
+using namespace OIIO;
 
 // _ioProxySupportedExtensions is a list of hardcoded file extensions that
 // support ioProxy. Although OIIO has an api call for checking whether or