diff --git a/dll/win32/imm32/imm.c b/dll/win32/imm32/imm.c
index 2a22fc18671..a4e48cb88ce 100644
--- a/dll/win32/imm32/imm.c
+++ b/dll/win32/imm32/imm.c
@@ -657,7 +657,7 @@ BOOL APIENTRY Imm32CleanupContext(HIMC hIMC, HKL hKL, BOOL bKeep)
         return FALSE;
     }
 
-    if (pClientImc->dwFlags & CLIENTIMC_UNKNOWN1)
+    if (pClientImc->dwFlags & CLIENTIMC_DESTROY)
         return TRUE;
 
     InterlockedIncrement(&pClientImc->cLockObj);
@@ -689,7 +689,7 @@ BOOL APIENTRY Imm32CleanupContext(HIMC hIMC, HKL hKL, BOOL bKeep)
     ImmUnlockIMC(hIMC);
 
 Quit:
-    pClientImc->dwFlags |= CLIENTIMC_UNKNOWN1;
+    pClientImc->dwFlags |= CLIENTIMC_DESTROY;
     ImmUnlockClientImc(pClientImc);
 
 Finish:
@@ -931,7 +931,7 @@ PCLIENTIMC WINAPI ImmLockClientImc(HIMC hImc)
     }
     else
     {
-        if (pClientImc->dwFlags & CLIENTIMC_UNKNOWN1)
+        if (pClientImc->dwFlags & CLIENTIMC_DESTROY)
             return NULL;
     }
 
@@ -950,7 +950,7 @@ VOID WINAPI ImmUnlockClientImc(PCLIENTIMC pClientImc)
     TRACE("(%p)\n", pClientImc);
 
     cLocks = InterlockedDecrement(&pClientImc->cLockObj);
-    if (cLocks != 0 || !(pClientImc->dwFlags & CLIENTIMC_UNKNOWN1))
+    if (cLocks != 0 || !(pClientImc->dwFlags & CLIENTIMC_DESTROY))
         return;
 
     hInputContext = pClientImc->hInputContext;
diff --git a/win32ss/include/ntuser.h b/win32ss/include/ntuser.h
index 326bc9aefbe..846750ca64e 100644
--- a/win32ss/include/ntuser.h
+++ b/win32ss/include/ntuser.h
@@ -1316,7 +1316,7 @@ C_ASSERT(sizeof(CLIENTIMC) == 0x34);
 #define CLIENTIMC_WIDE 0x1
 #define CLIENTIMC_UNKNOWN5 0x2
 #define CLIENTIMC_UNKNOWN4 0x20
-#define CLIENTIMC_UNKNOWN1 0x40
+#define CLIENTIMC_DESTROY 0x40
 #define CLIENTIMC_UNKNOWN3 0x80
 #define CLIENTIMC_UNKNOWN2 0x100