diff --git a/build/modules.conf.in b/build/modules.conf.in
index 953613b2fb..ddcf9474f2 100644
--- a/build/modules.conf.in
+++ b/build/modules.conf.in
@@ -68,7 +68,7 @@ codecs/mod_vp8
 #codecs/mod_ilbc
 #codecs/mod_isac
 #codecs/mod_mp4v
-#codecs/mod_opus
+codecs/mod_opus
 #codecs/mod_sangoma_codec
 #codecs/mod_silk
 #codecs/mod_siren
diff --git a/conf/vanilla/autoload_configs/modules.conf.xml b/conf/vanilla/autoload_configs/modules.conf.xml
index e2dce594fa..4cd8f8e1ce 100644
--- a/conf/vanilla/autoload_configs/modules.conf.xml
+++ b/conf/vanilla/autoload_configs/modules.conf.xml
@@ -90,7 +90,7 @@
     <!--<load module="mod_siren"/>-->
     <!--<load module="mod_isac"/>-->
     <!--<load module="mod_celt"/>-->
-    <!--<load module="mod_opus"/>-->
+    <load module="mod_opus"/>
 
     <!-- File Format Interfaces -->
     <load module="mod_sndfile"/>
diff --git a/conf/vanilla/vars.xml b/conf/vanilla/vars.xml
index 92c57a2a60..20016cd85f 100644
--- a/conf/vanilla/vars.xml
+++ b/conf/vanilla/vars.xml
@@ -243,7 +243,7 @@
        127 - BV32
 
   -->
-  <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G722,PCMU,PCMA,GSM"/>
+  <X-PRE-PROCESS cmd="set" data="global_codec_prefs=OPUS,G722,PCMU,PCMA,GSM"/>
   <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU,PCMA,GSM"/>
 
   <!--