diff --git a/record/record.c b/record/record.c
index c2bfbfbe1..45f531545 100644
--- a/record/record.c
+++ b/record/record.c
@@ -46,6 +46,7 @@ and Jim Haggerty of Metheus.
 #include "dix/resource_priv.h"
 #include "miext/extinit_priv.h"
 #include "os/client_priv.h"
+#include "os/osdep.h"
 #include "Xext/panoramiX.h"
 #include "Xext/panoramiXsrv.h"
 
@@ -1299,6 +1300,13 @@ RecordSanityCheckRegisterClients(RecordContextPtr pContext, ClientPtr client,
     int i;
     XID recordingClient;
 
+    /* LimitClients is 2048 at max, way less that MAXINT */
+    if (stuff->nClients > LimitClients)
+        return BadValue;
+
+    if (stuff->nRanges > (MAXINT - 4 * stuff->nClients) / SIZEOF(xRecordRange))
+        return BadValue;
+
     if (((client->req_len << 2) - SIZEOF(xRecordRegisterClientsReq)) !=
         4 * stuff->nClients + SIZEOF(xRecordRange) * stuff->nRanges)
         return BadLength;