diff --git a/asn1/hnbap/HNBAP-PDU.asn b/asn1/hnbap/HNBAP-PDU.asn
index 299fffb..f800b0d 100644
--- a/asn1/hnbap/HNBAP-PDU.asn
+++ b/asn1/hnbap/HNBAP-PDU.asn
@@ -1,6 +1,6 @@
 HNBAP-PDU {
 itu-t (0) identified-organization (4) etsi (0) mobileDomain (0) 
-umts-Access (20) modules (3) hnbap(6) version1 (1) hnbap-PDU (1) }
+umts-Access (20) modules (3) hnbap(6) version1 (1) hnbap-PDU (255) }
 
 DEFINITIONS AUTOMATIC TAGS ::=
 
@@ -11,11 +11,7 @@
     ProcedureCode,
     ProtocolIE-ID
 
-FROM HNBAP-CommonDataTypes
-
-    maxProtocolIEs
-
-FROM HNBAP-Constants;
+FROM HNBAP-CommonDataTypes;
 
 HNBAP-PDU ::= CHOICE {
     initiatingMessage       InitiatingMessage,
diff --git a/asn1/ranap/RANAP-PDU.asn b/asn1/ranap/RANAP-PDU.asn
index 5728c9b..433efec 100644
--- a/asn1/ranap/RANAP-PDU.asn
+++ b/asn1/ranap/RANAP-PDU.asn
@@ -11,11 +11,7 @@
     ProcedureCode,
     ProtocolIE-ID
 
-FROM RANAP-CommonDataTypes
-
-    maxProtocolIEs
-
-FROM RANAP-Constants;
+FROM RANAP-CommonDataTypes;
 
 RANAP-PDU ::= CHOICE {
     initiatingMessage       InitiatingMessage,
diff --git a/asn1/rua/RUA-PDU.asn b/asn1/rua/RUA-PDU.asn
index 5f88c0d..159d8ac 100644
--- a/asn1/rua/RUA-PDU.asn
+++ b/asn1/rua/RUA-PDU.asn
@@ -11,11 +11,7 @@
     ProcedureCode,
     ProtocolIE-ID
 
-FROM RUA-CommonDataTypes
-
-    maxProtocolIEs
-
-FROM RUAP-Constants;
+FROM RUA-CommonDataTypes;
 
 RUA-PDU ::= CHOICE {
     initiatingMessage       InitiatingMessage,