diff --git a/dlls/crypt32/tests/msg.c b/dlls/crypt32/tests/msg.c
index fc54041308a..38347605917 100644
--- a/dlls/crypt32/tests/msg.c
+++ b/dlls/crypt32/tests/msg.c
@@ -3205,7 +3205,8 @@ static void test_msg_control(void)
         ok(!ret && GetLastError() == E_INVALIDARG,
          "Expected E_INVALIDARG, got %08x\n", GetLastError());
     }
-    ret = CryptMsgUpdate(msg, NULL, 0, TRUE);
+    ret = CryptMsgUpdate(msg, msgData, sizeof(msgData), TRUE);
+    ok(ret, "CryptMsgUpdate failed: %08x\n", GetLastError());
     /* or after an update. */
     for (i = 1; !old_crypt32 && (i <= CMSG_CTRL_ADD_CMS_SIGNER_INFO); i++)
     {