diff --git a/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/DataFormats/Multimedia/Audio/Waveform/MicrosoftWave/MicrosoftWaveDataFormat.cs b/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/DataFormats/Multimedia/Audio/Waveform/MicrosoftWave/MicrosoftWaveDataFormat.cs
index a49635ac..abe69caf 100644
--- a/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/DataFormats/Multimedia/Audio/Waveform/MicrosoftWave/MicrosoftWaveDataFormat.cs
+++ b/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/DataFormats/Multimedia/Audio/Waveform/MicrosoftWave/MicrosoftWaveDataFormat.cs
@@ -13,14 +13,17 @@ namespace UniversalEditor.DataFormats.Multimedia.Audio.Waveform.MicrosoftWave
 {
 	public class MicrosoftWaveDataFormat : RIFFDataFormat
 	{
+        private static DataFormatReference _dfr = null;
 		public override DataFormatReference MakeReference()
 		{
-			DataFormatReference dfr = base.MakeReference();
-			dfr.Title = "Microsoft waveform audio";
-			dfr.Filters.Add("Microsoft waveform audio", new byte?[][] { new byte?[] { (byte)'R', (byte)'I', (byte)'F', (byte)'F', null, null, null, null, (byte)'W', (byte)'A', (byte)'V', (byte)'E', (byte)'f', (byte)'m', (byte)'t', (byte)' ' } }, new string[] { "*.wav", "*.wave" });
-			dfr.Filters.Add("Sony ATRAC3+ encoded waveform audio", new string[] { "*.at3" });
-			dfr.Capabilities.Add(typeof(WaveformAudioObjectModel), DataFormatCapabilities.All);
-			return dfr;
+            if (_dfr == null)
+            {
+                _dfr = new DataFormatReference(GetType());
+                _dfr.Filters.Add("Microsoft waveform audio", new byte?[][] { new byte?[] { (byte)'R', (byte)'I', (byte)'F', (byte)'F', null, null, null, null, (byte)'W', (byte)'A', (byte)'V', (byte)'E', (byte)'f', (byte)'m', (byte)'t', (byte)' ' } }, new string[] { "*.wav", "*.wave" });
+                _dfr.Filters.Add("Sony ATRAC3+ encoded waveform audio", new string[] { "*.at3" });
+                _dfr.Capabilities.Add(typeof(WaveformAudioObjectModel), DataFormatCapabilities.All);
+            }
+			return _dfr;
 		}
 
 		// TODO: Test IsObjectModelSupported!!!