diff --git a/BL808Image.bt b/BL808Image.bt
index f82e45e9f7635f67bbb836b0e7451152044f5c53..780c2cbed6b65aadefa10ee63de443f5e368facb 100644
--- a/BL808Image.bt
+++ b/BL808Image.bt
@@ -231,7 +231,13 @@ if (BootHeader.magic != 0x504e4642)
     return 1;
 }
 
-if(BootHeader.flashCfgTableAddr < FileSize() && 
+if(BootHeader.flashCfgTableLen == 0)
+{
+    Warning("Configuration table length is 0.\n");
+    return 1;
+}
+
+if (BootHeader.flashCfgTableAddr < FileSize() &&
     BootHeader.flashCfgTableAddr + BootHeader.flashCfgTableLen <= FileSize()) {
     FSeek(BootHeader.flashCfgTableAddr);
     local quad num_configs = (BootHeader.flashCfgTableLen - 8) / 8;