diff --git a/CHANGELOG/CHANGELOG-1.20.md b/CHANGELOG/CHANGELOG-1.20.md
index 58ab84827..5b66a43cf 100644
--- a/CHANGELOG/CHANGELOG-1.20.md
+++ b/CHANGELOG/CHANGELOG-1.20.md
@@ -14,3 +14,5 @@ Changelog for the K8ssandra Operator, new PRs should update the `unreleased` sec
 When cutting a new release, update the `unreleased` heading to the tag being generated and date, like `## vX.Y.Z - YYYY-MM-DD` and create a new placeholder section for  `unreleased` entries.
 
 ## unreleased
+
+* [BUGFIX] [#1399](https://github.com/k8ssandra/k8ssandra-operator/issues/1399) Fixed SecretSyncController to handle multiple namespaces
diff --git a/main.go b/main.go
index fbc59f7f0..cddc52626 100644
--- a/main.go
+++ b/main.go
@@ -213,7 +213,7 @@ func main() {
 		if err = (&replicationctrl.SecretSyncController{
 			ReconcilerConfig: reconcilerConfig,
 			ClientCache:      clientCache,
-			WatchNamespaces:  []string{watchNamespace},
+			WatchNamespaces:  strings.Split(watchNamespace, ","),
 		}).SetupWithManager(mgr, additionalClusters, setupLog); err != nil {
 			setupLog.Error(err, "unable to create controller", "controller", "SecretSync")
 			os.Exit(1)