diff --git a/engine/server/sv_client.c b/engine/server/sv_client.c
index b99b19d8..07ac1973 100644
--- a/engine/server/sv_client.c
+++ b/engine/server/sv_client.c
@@ -342,6 +342,7 @@ void SV_ConnectClient( netadr_t from )
 	sv.current_client = newcl;
 	newcl->edict = EDICT_NUM( (newcl - svs.clients) + 1 );
 	newcl->challenge = challenge; // save challenge for checksumming
+	if( newcl->frames ) Mem_Free( newcl->frames );
 	newcl->frames = (client_frame_t *)Z_Malloc( sizeof( client_frame_t ) * SV_UPDATE_BACKUP );
 	newcl->userid = g_userid++;	// create unique userid
 	newcl->state = cs_connected;