diff --git a/installers/charm/osm-mon/src/charm.py b/installers/charm/osm-mon/src/charm.py
index d926776..045fd98 100755
--- a/installers/charm/osm-mon/src/charm.py
+++ b/installers/charm/osm-mon/src/charm.py
@@ -245,9 +245,9 @@
         }
         if self.vca.data:
             environment["OSMMON_VCA_HOST"] = self.vca.data.endpoints
-            environment["OSMMON_VCA_SECRET"] = self.vca.secret
-            environment["OSMMON_VCA_USER"] = self.vca.user
-            environment["OSMMON_VCA_CACERT"] = self.vca.cacert
+            environment["OSMMON_VCA_SECRET"] = self.vca.data.secret
+            environment["OSMMON_VCA_USER"] = self.vca.data.user
+            environment["OSMMON_VCA_CACERT"] = self.vca.data.cacert
         return {
             "summary": "mon layer",
             "description": "pebble config layer for mon",