diff --git a/installers/charm/osm-mon/src/charm.py b/installers/charm/osm-mon/src/charm.py
index bb98ccf..2111429 100755
--- a/installers/charm/osm-mon/src/charm.py
+++ b/installers/charm/osm-mon/src/charm.py
@@ -373,10 +373,11 @@
                 self.service_name: {
                     "override": "replace",
                     "summary": "mon service",
-                    "command": "/bin/bash scripts/start.sh",
+                    "command": "/bin/bash -c 'cd /app/osm_mon/ && /bin/bash start.sh'",
                     "startup": "enabled",
                     "user": "appuser",
                     "group": "appuser",
+                    "working-dir": "/app/osm_mon",  # This parameter has no effect in Juju 2.9.x
                     "environment": environment,
                 }
             },