diff --git a/dll/win32/imm32/ctf.c b/dll/win32/imm32/ctf.c
index 1a0e26788ed..0c69428184d 100644
--- a/dll/win32/imm32/ctf.c
+++ b/dll/win32/imm32/ctf.c
@@ -6,15 +6,13 @@
  */
 
 #include "precomp.h"
+#include <ndk/ldrfuncs.h> /* for RtlDllShutdownInProgress */
 #include <msctf.h> /* for ITfLangBarMgr */
 #include <objidl.h> /* for IInitializeSpy */
 #include <compat_undoc.h> /* for BaseCheckAppcompatCache */
 
 WINE_DEFAULT_DEBUG_CHANNEL(imm);
 
-/* FIXME: Use proper header */
-BOOLEAN WINAPI RtlDllShutdownInProgress(VOID);
-
 static BOOL Imm32InsideLoaderLock(VOID)
 {
     return NtCurrentTeb()->ProcessEnvironmentBlock->LoaderLock->OwningThread ==