diff --git a/Audio/Chain/ChunkList.m b/Audio/Chain/ChunkList.m
index 04c4a27e6..c3e832156 100644
--- a/Audio/Chain/ChunkList.m
+++ b/Audio/Chain/ChunkList.m
@@ -648,7 +648,7 @@ static void convert_be_to_le(uint8_t *buffer, size_t bitsPerSample, size_t bytes
 	inConverter = YES;
 
 	AudioStreamBasicDescription chunkFormat = [inChunk format];
-	if(![inChunk duration] ||
+	if(![inChunk frameCount] ||
 	   (chunkFormat.mFormatFlags == kAudioFormatFlagsNativeFloatPacked &&
 		chunkFormat.mBitsPerChannel == 32)) {
 		inConverter = NO;