diff --git a/libmat2/video.py b/libmat2/video.py
index 1b38c77..4d33aa4 100644
--- a/libmat2/video.py
+++ b/libmat2/video.py
@@ -91,11 +91,11 @@ class AVIParser(AbstractFFmpegParser):
                       'VideoFrameRate', 'VideoFrameCount', 'Quality',
                       'SampleSize', 'BMPVersion', 'ImageWidth', 'ImageHeight',
                       'Planes', 'BitDepth', 'Compression', 'ImageLength',
-                      'PixelsPerMeterX', 'PixelsPerMeterY', 'NumColors',
-                      'NumImportantColors', 'NumColors', 'NumImportantColors',
+                      'PixelsPerMeterX', 'PixelsPerMeterY',
+                      'NumImportantColors', 'NumColors',
                       'RedMask', 'GreenMask', 'BlueMask', 'AlphaMask',
                       'ColorSpace', 'AudioCodec', 'AudioCodecRate',
-                      'AudioSampleCount', 'AudioSampleCount',
+                      'AudioSampleCount',
                       'AudioSampleRate', 'Encoding', 'NumChannels',
                       'SampleRate', 'AvgBytesPerSec', 'BitsPerSample',
                       'Duration', 'ImageSize', 'Megapixels'}