diff --git a/features/steps/standby_cluster.py b/features/steps/standby_cluster.py
index 063d9f82..c04fd6f3 100644
--- a/features/steps/standby_cluster.py
+++ b/features/steps/standby_cluster.py
@@ -10,7 +10,8 @@ SELECT * FROM pg_catalog.pg_stat_replication
 WHERE application_name = '{0}'
 """
 
-callback = sys.executable + " features/callback2.py "
+executable = sys.executable if os.name != 'nt' else sys.executable.replace('\\', '/')
+callback = executable + " features/callback2.py "
 
 
 @step('I start {name:w} with callback configured')
@@ -18,7 +19,7 @@ def start_patroni_with_callbacks(context, name):
     return context.pctl.start(name, custom_config={
         "postgresql": {
             "callbacks": {
-                "on_role_change": sys.executable + " features/callback.py"
+                "on_role_change": executable + " features/callback.py"
             }
         }
     })
@@ -31,7 +32,7 @@ def start_patroni(context, name, cluster_name):
         "postgresql": {
             "callbacks": {c: callback + name for c in ('on_start', 'on_stop', 'on_restart', 'on_role_change')},
             "backup_restore": {
-                "command": (sys.executable + " features/backup_restore.py --sourcedir=" +
+                "command": (executable + " features/backup_restore.py --sourcedir=" +
                             os.path.join(context.pctl.patroni_path, 'data', 'basebackup'))}
         }
     })