diff --git a/apps/base/matrix/synatainer.yaml b/apps/base/matrix/synatainer.yaml
index 64cbc6e8dced588a9de54d2cdf7d373149216d97..ba1ac74cbcfed77dc3f71ff1053dc58ff4ddde80 100644
--- a/apps/base/matrix/synatainer.yaml
+++ b/apps/base/matrix/synatainer.yaml
@@ -22,7 +22,7 @@ spec:
               seccompProfile:
                 type: RuntimeDefault
             env:
-              - name: PG_host
+              - name: DB_HOST
                 value: matrix-postgres.matrix.svc.cluster.local
               - name: DB_NAME
                 value: synapse