diff --git a/dlls/msctf/compartmentmgr.c b/dlls/msctf/compartmentmgr.c
index a5bae3f08bb..35ebe2ab505 100644
--- a/dlls/msctf/compartmentmgr.c
+++ b/dlls/msctf/compartmentmgr.c
@@ -617,7 +617,7 @@ static HRESULT WINAPI CompartmentSource_UnadviseSink(ITfSource *iface, DWORD pdw
     if (get_Cookie_magic(pdwCookie)!=COOKIE_MAGIC_COMPARTMENTSINK)
         return E_INVALIDARG;
 
-    sink = (CompartmentSink*)remove_Cookie(pdwCookie);
+    sink = remove_Cookie(pdwCookie);
     if (!sink)
         return CONNECT_E_NOCONNECTION;
 
diff --git a/dlls/msctf/context.c b/dlls/msctf/context.c
index 147805ce37c..9d6cf86cdce 100644
--- a/dlls/msctf/context.c
+++ b/dlls/msctf/context.c
@@ -642,7 +642,7 @@ static HRESULT WINAPI ContextSource_UnadviseSink(ITfSource *iface, DWORD pdwCook
     if (get_Cookie_magic(pdwCookie)!=COOKIE_MAGIC_CONTEXTSINK)
         return E_INVALIDARG;
 
-    sink = (ContextSink*)remove_Cookie(pdwCookie);
+    sink = remove_Cookie(pdwCookie);
     if (!sink)
         return CONNECT_E_NOCONNECTION;
 
diff --git a/dlls/msctf/inputprocessor.c b/dlls/msctf/inputprocessor.c
index 234060404ea..9c68007ea7f 100644
--- a/dlls/msctf/inputprocessor.c
+++ b/dlls/msctf/inputprocessor.c
@@ -739,7 +739,7 @@ static HRESULT WINAPI IPPSource_UnadviseSink(ITfSource *iface, DWORD pdwCookie)
     if (get_Cookie_magic(pdwCookie)!=COOKIE_MAGIC_IPPSINK)
         return E_INVALIDARG;
 
-    sink = (InputProcessorProfilesSink*)remove_Cookie(pdwCookie);
+    sink = remove_Cookie(pdwCookie);
     if (!sink)
         return CONNECT_E_NOCONNECTION;
 
diff --git a/dlls/msctf/threadmgr.c b/dlls/msctf/threadmgr.c
index 63c7ba0ba8a..48f33c7d836 100644
--- a/dlls/msctf/threadmgr.c
+++ b/dlls/msctf/threadmgr.c
@@ -662,7 +662,7 @@ static HRESULT WINAPI ThreadMgrSource_UnadviseSink(ITfSource *iface, DWORD pdwCo
     if (get_Cookie_magic(pdwCookie)!=COOKIE_MAGIC_TMSINK)
         return E_INVALIDARG;
 
-    sink = (ThreadMgrSink*)remove_Cookie(pdwCookie);
+    sink = remove_Cookie(pdwCookie);
     if (!sink)
         return CONNECT_E_NOCONNECTION;