diff --git a/base/services/umpnpmgr/precomp.h b/base/services/umpnpmgr/precomp.h
index d24a760884a..82035203441 100644
--- a/base/services/umpnpmgr/precomp.h
+++ b/base/services/umpnpmgr/precomp.h
@@ -53,10 +53,6 @@ extern HANDLE hDeviceInstallListNotEmpty;
 BOOL
 SetupIsActive(VOID);
 
-FORCEINLINE
-BOOL
-IsUISuppressionAllowed(VOID);
-
 DWORD
 WINAPI
 DeviceInstallThread(