diff --git a/dlls/crypt32/crypt32.spec b/dlls/crypt32/crypt32.spec
index c06bca1debc..8d431b40fcb 100644
--- a/dlls/crypt32/crypt32.spec
+++ b/dlls/crypt32/crypt32.spec
@@ -148,7 +148,7 @@
 @ stub CryptMsgCountersign
 @ stub CryptMsgCountersignEncoded
 @ stdcall CryptMsgDuplicate(ptr)
-@ stub CryptMsgEncodeAndSignCTL
+@ stdcall CryptMsgEncodeAndSignCTL(long ptr ptr long ptr ptr)
 @ stdcall CryptMsgGetAndVerifySigner(ptr long ptr long ptr ptr)
 @ stdcall CryptMsgGetParam(ptr long long ptr ptr)
 @ stdcall CryptMsgOpenToDecode(long long long long ptr ptr)
diff --git a/dlls/crypt32/msg.c b/dlls/crypt32/msg.c
index 7c90d75dd2d..949717f8341 100644
--- a/dlls/crypt32/msg.c
+++ b/dlls/crypt32/msg.c
@@ -2896,3 +2896,12 @@ BOOL WINAPI CryptMsgVerifyCountersignatureEncodedEx(HCRYPTPROV_LEGACY hCryptProv
      cbSignerInfoCountersignature, dwSignerType, pvSigner, dwFlags, pvReserved);
     return FALSE;
 }
+
+BOOL WINAPI CryptMsgEncodeAndSignCTL(DWORD dwMsgEncodingType,
+ PCTL_INFO pCtlInfo, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
+ BYTE *pbEncoded, DWORD *pcbEncoded)
+{
+    FIXME("(%08x, %p, %p, %08x, %p, %p): stub\n", dwMsgEncodingType, pCtlInfo,
+     pSignInfo, dwFlags, pbEncoded, pcbEncoded);
+    return FALSE;
+}