diff --git a/python_apps/pypo/liquidsoap_scripts/fdkaac.liq b/python_apps/pypo/liquidsoap_scripts/fdkaac.liq
index 491606802..0c6945221 100644
--- a/python_apps/pypo/liquidsoap_scripts/fdkaac.liq
+++ b/python_apps/pypo/liquidsoap_scripts/fdkaac.liq
@@ -1,24 +1,24 @@
             if bitrate == 24 then 
-                ignore(output_stereo(%fdkaac(bitrate = 24), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 24, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 32 then
-                ignore(output_stereo(%fdkaac(bitrate = 32), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 32, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 48 then
-                ignore(output_stereo(%fdkaac(bitrate = 48), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 48, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 64 then
-                ignore(output_stereo(%fdkaac(bitrate = 64), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 64, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 96 then
-                ignore(output_stereo(%fdkaac(bitrate = 96), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 96, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 128 then
-                ignore(output_stereo(%fdkaac(bitrate = 128), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 128, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 160 then
-                ignore(output_stereo(%fdkaac(bitrate = 160), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 160, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 192 then
-                ignore(output_stereo(%fdkaac(bitrate = 192), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 192, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 224 then
-                ignore(output_stereo(%fdkaac(bitrate = 224), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 224, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 256 then
-                ignore(output_stereo(%fdkaac(bitrate = 256), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 256, aot="mpeg4_he_aac_v2"), !source))
             elsif bitrate == 320 then
-                ignore(output_stereo(%fdkaac(bitrate = 320), !source))
+                ignore(output_stereo(%fdkaac(bitrate = 320, aot="mpeg4_he_aac_v2"), !source))
             end