diff --git a/setup.py b/setup.py
index 87a471d2..0a1e5c4f 100644
--- a/setup.py
+++ b/setup.py
@@ -29,9 +29,9 @@ except pkg_resources.ResolutionError:
 
 if os.path.exists("X:/pw.txt"):
     print("Using signtool")
-    with open("X:/pw.txt") as f:
+    with open("X:/pw.txt", encoding="utf-8-sig") as f:
         pw = f.read()
-    signtool = r'signtool sign /f X:/_SITS_Zertifikat_.pfx /p ' + pw + r' /fd sha256 /tr http://timestamp.digicert.com/ '
+    signtool = r'signtool sign /f X:/_SITS_Zertifikat_.pfx /p "' + pw + r'" /fd sha256 /tr http://timestamp.digicert.com/ '
 else:
     signtool = None