diff --git a/CORE/MAC/src/pe/sch/schBeaconGen.c b/CORE/MAC/src/pe/sch/schBeaconGen.c
index 19553ad..6c0b520 100644
--- a/CORE/MAC/src/pe/sch/schBeaconGen.c
+++ b/CORE/MAC/src/pe/sch/schBeaconGen.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2017, 2019 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -797,6 +797,13 @@
     // copy end of beacon only if length > 0
     if (length > 0)
     {
+        if (size + pMac->sch.schObject.gSchBeaconOffsetEnd >
+            SCH_MAX_BEACON_SIZE) {
+            PELOGE(schLog(pMac, LOGE,
+                   FL("beacon template fail size %d BeaconOffsetEnd %d"),
+                   size, pMac->sch.schObject.gSchBeaconOffsetEnd);)
+            return;
+        }
         for (i=0; i < pMac->sch.schObject.gSchBeaconOffsetEnd; i++)
             pMac->sch.schObject.gSchBeaconFrameBegin[size++] = pMac->sch.schObject.gSchBeaconFrameEnd[i];
     }