diff --git a/pype/hooks/harmony/pre_launch_args.py b/pype/hooks/harmony/pre_launch_args.py
index f09cef9384..a61977f4e7 100644
--- a/pype/hooks/harmony/pre_launch_args.py
+++ b/pype/hooks/harmony/pre_launch_args.py
@@ -26,7 +26,7 @@ class HarmonyPrelaunchHook(PreLaunchHook):
             (
                 "import avalon.harmony;"
                 "avalon.harmony.launch(\"{}\")"
-            ).format(harmony_executable.replace("\\", "/"))
+            ).format(harmony_executable.replace("\\", "\\\\"))
         ]
 
         # Append as whole list as these areguments should not be separated