diff --git a/src/rsrv/caserverio.c b/src/rsrv/caserverio.c
index b6cb4b92c..f84412213 100644
--- a/src/rsrv/caserverio.c
+++ b/src/rsrv/caserverio.c
@@ -45,6 +45,10 @@ void cas_send_bs_msg ( struct client *pclient, int lock_needed )
 {
     int status;
 
+    if ( lock_needed ) {
+        SEND_LOCK ( pclient );
+    }
+
     if ( CASDEBUG > 2 && pclient->send.stk ) {
         errlogPrintf ( "CAS: Sending a message of %d bytes\n", pclient->send.stk );
     }
@@ -55,13 +59,11 @@ void cas_send_bs_msg ( struct client *pclient, int lock_needed )
                 pclient->sock, (unsigned) pclient->addr.sin_addr.s_addr );
         }
         pclient->send.stk = 0u;
+        if(lock_needed)
+            SEND_UNLOCK(pclient);
         return;
     }
 
-    if ( lock_needed ) {
-        SEND_LOCK ( pclient );
-    }
-
     while ( pclient->send.stk && ! pclient->disconnect ) {
         status = send ( pclient->sock, pclient->send.buf, pclient->send.stk, 0 );
         if ( status >= 0 ) {