diff --git a/OSBindings/Mac/Clock Signal/Machine/CSROMFetcher.mm b/OSBindings/Mac/Clock Signal/Machine/CSROMFetcher.mm
index 44e7ebe62..87c1f5f85 100644
--- a/OSBindings/Mac/Clock Signal/Machine/CSROMFetcher.mm	
+++ b/OSBindings/Mac/Clock Signal/Machine/CSROMFetcher.mm	
@@ -16,14 +16,30 @@
 
 ROMMachine::ROMFetcher CSROMFetcher() {
 	return [] (const std::string &machine, const std::vector<ROMMachine::ROM> &roms) -> std::vector<std::unique_ptr<std::vector<std::uint8_t>>> {
-		NSString *subdirectory = [@"ROMImages/" stringByAppendingString:[NSString stringWithUTF8String:machine.c_str()]];
+		NSString *const subdirectory = [@"ROMImages/" stringByAppendingString:[NSString stringWithUTF8String:machine.c_str()]];
+		NSArray<NSURL *> *const supportURLs = [[NSFileManager defaultManager] URLsForDirectory:NSApplicationSupportDirectory inDomains:NSUserDomainMask];
+
 		std::vector<std::unique_ptr<std::vector<std::uint8_t>>> results;
 		for(const auto &rom: roms) {
-			NSData *fileData = [[NSBundle mainBundle]
-				dataForResource:[NSString stringWithUTF8String:rom.file_name.c_str()]
-				withExtension:nil
-				subdirectory:subdirectory];
+			NSData *fileData;
 
+			// Check for this file first within the application support directories.
+			for(NSURL *supportURL in supportURLs) {
+				NSURL *const fullURL = [[supportURL URLByAppendingPathComponent:subdirectory]
+							URLByAppendingPathComponent:[NSString stringWithUTF8String:rom.file_name.c_str()]];
+				fileData = [NSData dataWithContentsOfURL:fullURL];
+				if(fileData) break;
+			}
+
+			// Failing that, check inside the application bundle.
+			if(!fileData) {
+				fileData = [[NSBundle mainBundle]
+					dataForResource:[NSString stringWithUTF8String:rom.file_name.c_str()]
+					withExtension:nil
+					subdirectory:subdirectory];
+			}
+
+			// Store an appropriate result.
 			if(!fileData)
 				results.emplace_back(nullptr);
 			else {