diff --git a/audio/audio_hw.c b/audio/audio_hw.c
index ba4c212..d449030 100644
--- a/audio/audio_hw.c
+++ b/audio/audio_hw.c
@@ -542,7 +542,7 @@
         }
         // disable noise suppression when capturing front and back mic for voice recognition
         if ((adev->input_source == AUDIO_SOURCE_VOICE_RECOGNITION) &&
-                (adev->in_channel_mask != AUDIO_CHANNEL_IN_FRONT_BACK))
+                (adev->in_channel_mask == AUDIO_CHANNEL_IN_FRONT_BACK))
             new_es305_preset = -1;
     } else {
         if (output_device_id != OUT_DEVICE_NONE) {
@@ -762,6 +762,7 @@
     in->frames_in = 0;
     adev->input_source = in->input_source;
     adev->in_device = in->device;
+    adev->in_channel_mask = in->channel_mask;
 
     eS305_SetActiveIoHandle(in->io_handle);
     select_devices(adev);
@@ -1252,6 +1253,7 @@
 
         in->dev->input_source = AUDIO_SOURCE_DEFAULT;
         in->dev->in_device = AUDIO_DEVICE_NONE;
+        in->dev->in_channel_mask = 0;
         select_devices(adev);
         in->standby = true;