diff --git a/tests/__init__.py b/tests/__init__.py
index ca7eae568..9dc5dfd23 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -76,11 +76,11 @@
 
 if __name__ == '__main__':
     from peewee import print_
-    print_("""\033[1;31m
+    print_(r"""\x1b[1;31m
      ______   ______     ______     __     __     ______     ______
     /\  == \ /\  ___\   /\  ___\   /\ \  _ \ \   /\  ___\   /\  ___\\
     \ \  _-/ \ \  __\   \ \  __\   \ \ \/ ".\ \  \ \  __\   \ \  __\\
      \ \_\    \ \_____\  \ \_____\  \ \__/".~\_\  \ \_____\  \ \_____\\
       \/_/     \/_____/   \/_____/   \/_/   \/_/   \/_____/   \/_____/
-    \033[0m""")
+    \x1b[0m""")
     unittest.main(argv=sys.argv)