diff --git a/internal/pkg/onuadaptercore/platform.go b/internal/pkg/onuadaptercore/platform.go
index d70d7f8..1f9898f 100644
--- a/internal/pkg/onuadaptercore/platform.go
+++ b/internal/pkg/onuadaptercore/platform.go
@@ -118,7 +118,7 @@
 //Mask to indicate which possibly active ONU UNI state  is really reported to the core
 // compare python code - at the moment restrict active state to the first ONU UNI port
 // check is limited to max 16 uni ports - cmp above UNI limit!!!
-var activeUniPortStateUpdateMask = 0x00FF
+var activeUniPortStateUpdateMask = 0x0001
 
 /*
 //MinUpstreamPortID value