diff --git a/ACCodeSnippetRepository/Controllers/ACCodeSnippetRepositoryConfigurationWindowController.m b/ACCodeSnippetRepository/Controllers/ACCodeSnippetRepositoryConfigurationWindowController.m
index 104a5d1..3467dd5 100644
--- a/ACCodeSnippetRepository/Controllers/ACCodeSnippetRepositoryConfigurationWindowController.m
+++ b/ACCodeSnippetRepository/Controllers/ACCodeSnippetRepositoryConfigurationWindowController.m
@@ -270,7 +270,7 @@ - (NSString*)pathForSnippetDirectory {
 - (NSString*)pathForBackupDirectory {
     NSDate *currentDate = [NSDate date];
     NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
-    [dateFormatter setDateFormat:@"YYMMdd-HHmm"];
+    [dateFormatter setDateFormat:@"yyMMdd-HHmm"];
     return [NSString pathWithComponents:@[self.pathForSnippetDirectory, [NSString stringWithFormat:@"backup-%@", [dateFormatter stringFromDate:currentDate]]]];
 }