diff --git a/src/daemon/filter-chain/meson.build b/src/daemon/filter-chain/meson.build
index c0540c1ff..105749b7a 100644
--- a/src/daemon/filter-chain/meson.build
+++ b/src/daemon/filter-chain/meson.build
@@ -1,6 +1,7 @@
 conf_files = [
   [ 'demonic.conf', 'demonic.conf' ],
-  [ 'duplicate-FL.conf', 'duplicate-FL.conf' ],
+  [ 'source-duplicate-FL.conf', 'source-duplicate-FL.conf' ],
+  [ 'sink-mix-FL-FR.conf', 'sink-mix-FL-FR.conf' ],
   [ 'sink-virtual-surround-5.1-kemar.conf', 'sink-virtual-surround-5.1-kemar.conf' ],
   [ 'sink-virtual-surround-7.1-hesuvi.conf', 'sink-virtual-surround-7.1-hesuvi.conf' ],
   [ 'sink-dolby-surround.conf', 'sink-dolby-surround.conf' ],
diff --git a/src/daemon/filter-chain/sink-mix-FL-FR.conf b/src/daemon/filter-chain/sink-mix-FL-FR.conf
index 2d00b275e..1ea5c4e63 100644
--- a/src/daemon/filter-chain/sink-mix-FL-FR.conf
+++ b/src/daemon/filter-chain/sink-mix-FL-FR.conf
@@ -14,25 +14,25 @@ context.modules = [
                         name   = mix
                         type   = builtin
                         label  = mixer
-			control = {
-			  "Gain 1" = 0.5
-			  "Gain 2" = 0.5
-			}
+                        control = {
+                          "Gain 1" = 0.5
+                          "Gain 2" = 0.5
+                        }
                     }
                 ]
-                inputs = [ "mix:In 1" "mix:In 2" ]
-                outputs  = [ "mix:Out" ]
+                inputs  = [ "mix:In 1" "mix:In 2" ]
+                outputs = [ "mix:Out" ]
             }
             capture.props = {
-                node.name       = "mix_input.mix-FL-FR-to-FL"
-                audio.position  = [ FL FR ]
-		media.class     = "Audio/Sink"
+                node.name         = "mix_input.mix-FL-FR-to-FL"
+                audio.position    = [ FL FR ]
+                media.class       = "Audio/Sink"
             }
             playback.props = {
-                node.name        = "mix_output.mix-FL-FR-to-FL"
-                audio.position  = [ FL ]
+                node.name         = "mix_output.mix-FL-FR-to-FL"
+                audio.position    = [ FL ]
                 stream.dont-remix = true
-                node.passive = true
+                node.passive      = true
             }
         }
     }