diff --git a/src/NzbDrone.Mono/DiskProvider.cs b/src/NzbDrone.Mono/DiskProvider.cs
index b83011bfa..0184e6669 100644
--- a/src/NzbDrone.Mono/DiskProvider.cs
+++ b/src/NzbDrone.Mono/DiskProvider.cs
@@ -93,7 +93,7 @@ public override void SetPermissions(string path, string mask, string user, strin
 
             if (!uint.TryParse(group, out groupId))
             {
-                var g = Syscall.getgrnam(user);
+                var g = Syscall.getgrnam(group);
 
                 if (g == null)
                 {