diff --git a/cmake_targets/oaisim_build_oai/CMakeLists.template b/cmake_targets/oaisim_build_oai/CMakeLists.template
index 4619c19e25..3b84d5ab48 100644
--- a/cmake_targets/oaisim_build_oai/CMakeLists.template
+++ b/cmake_targets/oaisim_build_oai/CMakeLists.template
@@ -67,8 +67,9 @@ set (  PHYSIM True )
 set (  PUCCH True )
 set (  RANDOM_BF False )
 set (  RF_BOARD "False" )
-set (  RRC_ASN1_VERSION "Rel10" )
 set (  RLC_STOP_ON_LOST_PDU False )
+set (  RRC_ASN1_VERSION "Rel10" )
+set (  RRC_DEFAULT_RAB_IS_AM True)
 set (  RRC_MSG_PRINT False )
 set (  RTAI False )
 set (  SECU False )