diff --git a/net/rpmsg/rpmsg_sockif.c b/net/rpmsg/rpmsg_sockif.c
index 10b67d2f618..72d338d6e25 100644
--- a/net/rpmsg/rpmsg_sockif.c
+++ b/net/rpmsg/rpmsg_sockif.c
@@ -717,8 +717,10 @@ static int rpmsg_socket_connect_internal(FAR struct socket *psock)
       return ret;
     }
 
+  nxmutex_lock(&conn->recvlock);
   if (conn->sendsize == 0)
     {
+      nxmutex_unlock(&conn->recvlock);
       if (_SS_ISNONBLOCK(conn->sconn.s_flags))
         {
           return -EINPROGRESS;
@@ -736,6 +738,10 @@ static int rpmsg_socket_connect_internal(FAR struct socket *psock)
                                     NULL);
         }
     }
+  else
+    {
+      nxmutex_unlock(&conn->recvlock);
+    }
 
   return ret;
 }