diff --git a/dlls/msctf/documentmgr.c b/dlls/msctf/documentmgr.c
index dd49cd022fa..44856db632b 100644
--- a/dlls/msctf/documentmgr.c
+++ b/dlls/msctf/documentmgr.c
@@ -77,11 +77,15 @@ static inline EnumTfContext *impl_from_IEnumTfContexts(IEnumTfContexts *iface)
 
 static void DocumentMgr_Destructor(DocumentMgr *This)
 {
-    ITfThreadMgr *tm;
+    ITfThreadMgr *tm = NULL;
     TRACE("destroying %p\n", This);
 
     TF_GetThreadMgr(&tm);
-    ThreadMgr_OnDocumentMgrDestruction(tm, &This->ITfDocumentMgr_iface);
+    if (tm)
+    {
+        ThreadMgr_OnDocumentMgrDestruction(tm, &This->ITfDocumentMgr_iface);
+        ITfThreadMgr_Release(tm);
+    }
 
     if (This->contextStack[0])
         ITfContext_Release(This->contextStack[0]);