diff --git a/Plugins/HighlyComplete/HighlyComplete/HCDecoder.mm b/Plugins/HighlyComplete/HighlyComplete/HCDecoder.mm
index 1bcaafe87..e6f5e0c8b 100644
--- a/Plugins/HighlyComplete/HighlyComplete/HCDecoder.mm
+++ b/Plugins/HighlyComplete/HighlyComplete/HCDecoder.mm
@@ -103,6 +103,7 @@ void *source_fopen(const char *path) {
 	id<CogSource> source;
 	if(![[psf_file_container instance] try_hint:[NSString stringWithUTF8String:path] source:&source]) {
 		NSString *urlString = [NSString stringWithUTF8String:path];
+		urlString = [urlString stringByAddingPercentEncodingWithAllowedCharacters:NSCharacterSet.URLFragmentAllowedCharacterSet];
 		NSURL *url = [NSURL URLWithDataRepresentation:[urlString dataUsingEncoding:NSUTF8StringEncoding] relativeToURL:nil];
 
 		id audioSourceClass = NSClassFromString(@"AudioSource");