diff --git a/Plugins/MAD/MADDecoder.m b/Plugins/MAD/MADDecoder.m
index f801fee3d..f46f6e6f8 100644
--- a/Plugins/MAD/MADDecoder.m
+++ b/Plugins/MAD/MADDecoder.m
@@ -756,6 +756,7 @@
 }
 
 - (NSDictionary *)properties {
+	if(layer < 1 || layer > 3) return nil;
 	const NSString *layers[3] = { @"MP1", @"MP2", @"MP3" };
 	return @{ @"channels": [NSNumber numberWithInt:channels],
 		      @"bitsPerSample": [NSNumber numberWithInt:32],