diff --git a/CACHEDIR.tag.in b/CACHEDIR.TAG.in
similarity index 100%
rename from CACHEDIR.tag.in
rename to CACHEDIR.TAG.in
diff --git a/init.py b/init.py
index c4f0a05..565c498 100755
--- a/init.py
+++ b/init.py
@@ -88,7 +88,7 @@ if __name__ == '__main__':
         accumulated += [f'"-D{key}={val}"' for key, val in vars.items()]
         accumulated += args
     cmds = [
-        f"cp {os.path.join(self_dir, 'CACHEDIR.tag.in')} CACHEDIR.tag",
+        f"cp {os.path.join(self_dir, 'CACHEDIR.TAG.in')} CACHEDIR.TAG",
         f"cmake {source_dir} {' '.join(accumulated)}",
         ' '.join(build)
     ]