diff --git a/libs/openzap/src/isdn/Q931ie.c b/libs/openzap/src/isdn/Q931ie.c
index 1258144139..f3041b2b0e 100644
--- a/libs/openzap/src/isdn/Q931ie.c
+++ b/libs/openzap/src/isdn/Q931ie.c
@@ -1029,7 +1029,6 @@ L3INT Q931Uie_Cause(Q931_TrunkInfo_t *pTrunk, Q931mes_Generic *pMsg, L3UCHAR * I
 
     /* Octet 4 */
     pie->Value = IBuf[Octet+Off] & 0x7f;
-    Octet++;
 
     Q931IESizeTest(Q931E_CAUSE);