diff --git a/dev-upgrade/pg/pg.yaml b/dev-upgrade/pg/pg.yaml
index 721d0de..ecf7305 100644
--- a/dev-upgrade/pg/pg.yaml
+++ b/dev-upgrade/pg/pg.yaml
@@ -19,7 +19,7 @@ spec:
         ports:
         - containerPort: 5432
         volumeMounts:
-        - name: postgresql_data
+        - name: postgresql-data
           mountPath: /var/lib/postgresql/data
         env:
         - name: POSTGRES_USER
@@ -29,7 +29,7 @@ spec:
         - name: POSTGRES_DB
           value: "sonar"
       volumes:
-      - name: postgresql_data
+      - name: postgresql-data
         hostPath:
           path: /data/sonarqube/postgresql/data
       affinity: