diff --git a/Frameworks/OakFileBrowser/src/io/FSDirectoryDataSource.mm b/Frameworks/OakFileBrowser/src/io/FSDirectoryDataSource.mm
index ffc00798..4dfe756b 100644
--- a/Frameworks/OakFileBrowser/src/io/FSDirectoryDataSource.mm
+++ b/Frameworks/OakFileBrowser/src/io/FSDirectoryDataSource.mm
@@ -32,7 +32,8 @@ OAK_DEBUG_VAR(FileBrowser_DSDirectory);
 @end
 
 @implementation FSFileItem
-@synthesize key;
+- (std::pair<dev_t, ino_t> const&)key                 { return key; }
+- (void)setKey:(std::pair<dev_t, ino_t> const&)newKey { key = newKey; }
 @end
 
 namespace