diff --git a/CarefulAudioRepair/Data/Mono.cs b/CarefulAudioRepair/Data/Mono.cs
index 4440278..d1d22f9 100644
--- a/CarefulAudioRepair/Data/Mono.cs
+++ b/CarefulAudioRepair/Data/Mono.cs
@@ -106,7 +106,13 @@ public double[] GetOutputArray(ChannelType channelType)
         }
 
         /// <inheritdoc/>
-        public void Dispose() => this.monoChannel.Dispose();
+        public void Dispose()
+        {
+            if (this.monoChannel is IDisposable channel)
+            {
+                channel.Dispose();
+            }
+        }
 
         /// <inheritdoc/>
         public double[] GetInputRange(ChannelType channelType, int start, int length)