diff --git a/media/codec2/sfplugin/CCodecConfig.cpp b/media/codec2/sfplugin/CCodecConfig.cpp
index 836d2a7..068e423 100644
--- a/media/codec2/sfplugin/CCodecConfig.cpp
+++ b/media/codec2/sfplugin/CCodecConfig.cpp
@@ -905,6 +905,9 @@
     add(ConfigMapper(KEY_MAX_OUTPUT_CHANNEL_COUNT, C2_PARAMKEY_MAX_CHANNEL_COUNT, "value")
         .limitTo(D::AUDIO & (D::CONFIG | D::PARAM | D::READ)));
 
+    add(ConfigMapper(KEY_CHANNEL_MASK, C2_PARAMKEY_CHANNEL_MASK, "value")
+        .limitTo(D::AUDIO & D::DECODER & D::READ));
+
     add(ConfigMapper(KEY_AAC_SBR_MODE, C2_PARAMKEY_AAC_SBR_MODE, "value")
         .limitTo(D::AUDIO & D::ENCODER & (D::CONFIG | D::PARAM | D::READ))
         .withMapper([](C2Value v) -> C2Value {