diff --git a/internal/common/function/function.go b/internal/common/function/function.go
index 39257bc..760406e 100644
--- a/internal/common/function/function.go
+++ b/internal/common/function/function.go
@@ -634,11 +634,11 @@ func GetLogger(ctx context.Context, obj client.Object, key string) logr.Logger {
 }
 
 // ComputePrefixForObjectStorage returns the prefix to be used for the BackupStorageLocation.
-// If a custom prefix is provided, it returns "<namespace>-<customPrefix>".
+// If a custom prefix is provided, it returns "<namespace>/<customPrefix>".
 // Otherwise, it returns the namespace name.
 func ComputePrefixForObjectStorage(namespace, customPrefix string) string {
 	if len(customPrefix) > 0 {
-		return fmt.Sprintf("%s-%s", namespace, customPrefix)
+		return fmt.Sprintf("%s/%s", namespace, customPrefix)
 	}
 	return namespace
 }
diff --git a/internal/controller/nonadminbackupstoragelocation_controller.go b/internal/controller/nonadminbackupstoragelocation_controller.go
index 49123c4..da96c94 100644
--- a/internal/controller/nonadminbackupstoragelocation_controller.go
+++ b/internal/controller/nonadminbackupstoragelocation_controller.go
@@ -541,8 +541,8 @@ func (r *NonAdminBackupStorageLocationReconciler) createVeleroBSL(ctx context.Co
 	}
 
 	// NaBSL/BSL must have a unique prefix for proper function of the non-admin backup sync controller
-	// 1. Check if user has specified the prefix as "foo" in NaBSL creation, then prefix used would be <non-admin-ns>-foo
-	// 2. TODO use the value from enforced spec if specified by the admin, if specified as "bar" then prefix used would be <non-admin-ns>-bar
+	// 1. Check if user has specified the prefix as "foo" in NaBSL creation, then prefix used would be <non-admin-ns>/foo
+	// 2. TODO use the value from enforced spec if specified by the admin, if specified as "bar" then prefix used would be <non-admin-ns>/bar
 	// 3. If none of the above, then we will use the non-admin user's namespace name as prefix
 	prefix := function.ComputePrefixForObjectStorage(nabsl.Namespace, nabsl.Spec.BackupStorageLocationSpec.ObjectStorage.Prefix)
 
diff --git a/internal/controller/nonadminbackupstoragelocation_controller_test.go b/internal/controller/nonadminbackupstoragelocation_controller_test.go
index eeadf5f..49c879d 100644
--- a/internal/controller/nonadminbackupstoragelocation_controller_test.go
+++ b/internal/controller/nonadminbackupstoragelocation_controller_test.go
@@ -486,7 +486,7 @@ var _ = ginkgo.Describe("ComputePrefixForObjectStorage", func() {
 		ginkgo.Entry("with custom prefix", prefixTestScenario{
 			namespace:      "test-nac-ns",
 			customPrefix:   "foo",
-			expectedPrefix: "test-nac-ns-foo",
+			expectedPrefix: "test-nac-ns/foo",
 		}),
 	)
 })