diff --git a/resources/templates/conf/vars.xml b/resources/templates/conf/vars.xml
index fedd936fe8..1095e7e218 100644
--- a/resources/templates/conf/vars.xml
+++ b/resources/templates/conf/vars.xml
@@ -113,8 +113,8 @@
        127 - BV32
 
   -->
-  <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G7221@32000h,G7221@16000h,G722,PCMU,PCMA,GSM"/>
-  <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU,PCMA,GSM"/>
+  <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G7221@32000h,G7221@16000h,G722,PCMU,PCMA"/>
+  <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU,PCMA"/>
 
   <!--
       xmpp_client_profile and xmpp_server_profile