diff --git a/dlls/localspl/localmon.c b/dlls/localspl/localmon.c
index 8737a060be2..4ee3efb8cd1 100644
--- a/dlls/localspl/localmon.c
+++ b/dlls/localspl/localmon.c
@@ -21,7 +21,6 @@
 #include <stdarg.h>
 
 #define COBJMACROS
-#define NONAMELESSUNION
 
 #include "windef.h"
 #include "winbase.h"
diff --git a/dlls/localspl/localspl_main.c b/dlls/localspl/localspl_main.c
index d4a3c33ca01..48db9c31a6f 100644
--- a/dlls/localspl/localspl_main.c
+++ b/dlls/localspl/localspl_main.c
@@ -21,7 +21,6 @@
 #include <stdarg.h>
 
 #define COBJMACROS
-#define NONAMELESSUNION
 
 #include "windef.h"
 #include "winbase.h"
diff --git a/dlls/localspl/provider.c b/dlls/localspl/provider.c
index 8256c5c30cb..b5fcdb1e6a1 100644
--- a/dlls/localspl/provider.c
+++ b/dlls/localspl/provider.c
@@ -21,7 +21,6 @@
 #include <stdarg.h>
 
 #define COBJMACROS
-#define NONAMELESSUNION
 
 #include "windef.h"
 #include "winbase.h"