diff --git a/BUILD.gn b/BUILD.gn
index 76f2a393d0..45525a9ea2 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -96,7 +96,7 @@ config("skia_private") {
 
 config("skia_winuwp") {
   if (skia_enable_winuwp) {
-    defines = [ "WINUWP" ]
+    defines = [ "SK_WINUWP" ]
   }
 }
 
diff --git a/src/xps/SkXPSDevice.cpp b/src/xps/SkXPSDevice.cpp
index 46cb3f147c..e5641a6099 100644
--- a/src/xps/SkXPSDevice.cpp
+++ b/src/xps/SkXPSDevice.cpp
@@ -319,7 +319,7 @@ bool SkXPSDevice::endSheet() {
 
 static HRESULT subset_typeface(const SkXPSDevice::TypefaceUse& current) {
     //The CreateFontPackage API is only supported on desktop, not in UWP
-    #ifdef SK_WINUWP
+    #if defined(SK_WINUWP)
     return E_NOTIMPL;
     #else
     //CreateFontPackage wants unsigned short.