diff --git a/.gitattributes b/.gitattributes
index 1b6acf56..187d064e 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,4 +1,4 @@
-*.ZC linguist-language=HolyC encoding=cp437
-*.HH linguist-language=HolyC encoding=cp437
-*.PRJ linguist-language=HolyC encoding=cp437
-*.IN linguist-language=HolyC encoding=cp437
+*.ZC linguist-language=HolyC encoding=cp437 working-tree-encoding=cp437
+*.HH linguist-language=HolyC encoding=cp437 working-tree-encoding=cp437
+*.PRJ linguist-language=HolyC encoding=cp437 working-tree-encoding=cp437
+*.IN linguist-language=HolyC encoding=cp437 working-tree-encoding=cp437