diff --git a/dlls/imm32/imm.c b/dlls/imm32/imm.c
index 3f8ad1868ce..377a2775136 100644
--- a/dlls/imm32/imm.c
+++ b/dlls/imm32/imm.c
@@ -3145,3 +3145,12 @@ BOOL WINAPI ImmGetHotKey(DWORD hotkey, UINT *modifiers, UINT *key, HKL hkl)
     FIXME("%x, %p, %p, %p: stub\n", hotkey, modifiers, key, hkl);
     return FALSE;
 }
+
+/***********************************************************************
+ *              IMMDisableLegacyIME(IMM32.@)
+ */
+BOOL WINAPI ImmDisableLegacyIME(void)
+{
+    FIXME("stub\n");
+    return TRUE;
+}
diff --git a/dlls/imm32/imm32.spec b/dlls/imm32/imm32.spec
index 2be5d92b117..4197bb81e21 100644
--- a/dlls/imm32/imm32.spec
+++ b/dlls/imm32/imm32.spec
@@ -11,6 +11,7 @@
 @ stdcall ImmDestroySoftKeyboard(long)
 @ stdcall ImmDisableIME(long)
 @ stdcall ImmDisableIme(long) ImmDisableIME
+@ stdcall ImmDisableLegacyIME()
 @ stdcall ImmDisableTextFrameService(long)
 @ stdcall ImmEnumInputContext(long ptr long)
 @ stdcall ImmEnumRegisterWordA(long ptr str long str ptr)
diff --git a/include/imm.h b/include/imm.h
index aa2fa1dc892..500aea978d1 100644
--- a/include/imm.h
+++ b/include/imm.h
@@ -493,6 +493,7 @@ BOOL   WINAPI ImmConfigureIMEW(HKL, HWND, DWORD, LPVOID);
 HIMC   WINAPI ImmCreateContext(void);
 BOOL   WINAPI ImmDestroyContext(HIMC hIMC);
 BOOL   WINAPI ImmDisableIME(DWORD idThread);
+BOOL   WINAPI ImmDisableLegacyIME(void);
 BOOL   WINAPI ImmEnumInputContext(DWORD, IMCENUMPROC, LPARAM);
 UINT   WINAPI ImmEnumRegisterWordA(HKL, REGISTERWORDENUMPROCA, LPCSTR, DWORD, LPCSTR, LPVOID);
 UINT   WINAPI ImmEnumRegisterWordW(HKL, REGISTERWORDENUMPROCW, LPCWSTR, DWORD, LPCWSTR, LPVOID);