diff --git a/dlls/quartz/nullrenderer.c b/dlls/quartz/nullrenderer.c
index dbbdd4f3304..eccdfc6757b 100644
--- a/dlls/quartz/nullrenderer.c
+++ b/dlls/quartz/nullrenderer.c
@@ -21,8 +21,6 @@
 
 #include "config.h"
 
-#define NONAMELESSSTRUCT
-#define NONAMELESSUNION
 #include "quartz_private.h"
 #include "pin.h"
 
diff --git a/dlls/quartz/videorenderer.c b/dlls/quartz/videorenderer.c
index 571a19db3b4..7bc26201ff2 100644
--- a/dlls/quartz/videorenderer.c
+++ b/dlls/quartz/videorenderer.c
@@ -20,8 +20,6 @@
 
 #include "config.h"
 
-#define NONAMELESSSTRUCT
-#define NONAMELESSUNION
 #include "quartz_private.h"
 #include "pin.h"
 
diff --git a/dlls/quartz/vmr9.c b/dlls/quartz/vmr9.c
index e950a484842..c9a330d5fdb 100644
--- a/dlls/quartz/vmr9.c
+++ b/dlls/quartz/vmr9.c
@@ -22,8 +22,6 @@
 
 #include "config.h"
 
-#define NONAMELESSSTRUCT
-#define NONAMELESSUNION
 #include "quartz_private.h"
 
 #include "uuids.h"