diff --git a/client/handle_http_test.go b/client/handle_http_test.go
index 4d7ac9a8f..4e522a438 100644
--- a/client/handle_http_test.go
+++ b/client/handle_http_test.go
@@ -527,7 +527,8 @@ func TestNewPelicanURL(t *testing.T) {
 		viper.Reset()
 		viper.Set("TLSSkipVerify", true)
 		config.InitConfig()
-		config.InitClient()
+		err := config.InitClient()
+		assert.NoError(t, err)
 		// Create a server that gives us a mock response
 		server := httptest.NewTLSServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			// make our response:
diff --git a/config/config.go b/config/config.go
index 8b36d7779..4f15ecc3a 100644
--- a/config/config.go
+++ b/config/config.go
@@ -156,6 +156,7 @@ var (
 		string(Pelican): true,
 		string(OSDF):    true,
 		string(Stash):   true,
+		"":              true,
 	}
 )
 
diff --git a/namespaces/namespaces_test.go b/namespaces/namespaces_test.go
index d9255d9a6..ada8cba5f 100644
--- a/namespaces/namespaces_test.go
+++ b/namespaces/namespaces_test.go
@@ -27,6 +27,7 @@ import (
 	"os"
 	"testing"
 
+	log "github.com/sirupsen/logrus"
 	"github.com/spf13/viper"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -103,7 +104,12 @@ func TestMatchNamespace(t *testing.T) {
 	// Reset the prefix to get old OSDF fallback behavior.
 	oldPrefix, err := config.SetPreferredPrefix("OSDF")
 	assert.NoError(t, err)
-	defer config.SetPreferredPrefix(oldPrefix)
+	defer func() {
+		_, err := config.SetPreferredPrefix(oldPrefix)
+		if err != nil {
+			log.Errorln(err)
+		}
+	}()
 
 	viper.Reset()
 	err = config.InitClient()
@@ -251,7 +257,12 @@ func TestGetNamespaces(t *testing.T) {
 	os.Setenv("OSDF_TOPOLOGY_NAMESPACE_URL", "https://doesnotexist.org.blah/namespaces.json")
 	oldPrefix, err := config.SetPreferredPrefix("OSDF")
 	assert.NoError(t, err)
-	defer config.SetPreferredPrefix(oldPrefix)
+	defer func() {
+		_, err := config.SetPreferredPrefix(oldPrefix)
+		if err != nil {
+			log.Errorln(err)
+		}
+	}()
 	viper.Reset()
 	err = config.InitClient()
 	assert.Nil(t, err)
diff --git a/xrootd/authorization_test.go b/xrootd/authorization_test.go
index e2e240a49..6207bc3f1 100644
--- a/xrootd/authorization_test.go
+++ b/xrootd/authorization_test.go
@@ -43,6 +43,7 @@ import (
 	"github.com/pelicanplatform/pelican/server_structs"
 	"github.com/pelicanplatform/pelican/server_utils"
 	"github.com/pelicanplatform/pelican/test_utils"
+	log "github.com/sirupsen/logrus"
 	"github.com/spf13/viper"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -278,7 +279,12 @@ func TestOSDFAuthCreation(t *testing.T) {
 			}
 			oldPrefix, err := config.SetPreferredPrefix("OSDF")
 			assert.NoError(t, err)
-			defer config.SetPreferredPrefix(oldPrefix)
+			defer func() {
+				_, err := config.SetPreferredPrefix(oldPrefix)
+				if err != nil {
+					log.Errorln(err)
+				}
+			}()
 
 			err = os.WriteFile(filepath.Join(dirName, "authfile"), []byte(testInput.authIn), fs.FileMode(0600))
 			require.NoError(t, err, "Failure writing test input authfile")