diff --git a/nomad/job_endpoint_test.go b/nomad/job_endpoint_test.go
index ff788a041c12..7ff57ccd06cc 100644
--- a/nomad/job_endpoint_test.go
+++ b/nomad/job_endpoint_test.go
@@ -1736,8 +1736,9 @@ func TestJobEndpoint_Register_Vault_MultiNamespaces(t *testing.T) {
 	var resp structs.JobRegisterResponse
 	err := msgpackrpc.CallWithCodec(codec, "Job.Register", req, &resp)
 	// OSS or Ent check
-	if s1.EnterpriseState.Features() == 0 {
-		require.True(t, errors.Is(err, ErrMultipleNamespaces))
+	if err != nil && s1.EnterpriseState.Features() == 0 {
+		// errors.Is cannot be used because the RPC call break error wrapping.
+		require.Contains(t, err.Error(), ErrMultipleNamespaces.Error())
 	} else {
 		require.NoError(t, err)
 	}