diff --git a/sys/unix/NetHack.xcodeproj/.gitattributes b/sys/unix/NetHack.xcodeproj/.gitattributes
new file mode 100644
index 000000000..0a7bada88
--- /dev/null
+++ b/sys/unix/NetHack.xcodeproj/.gitattributes
@@ -0,0 +1,2 @@
+* NH_filestag=(file%s_for_macOS_Xcode)
+