diff --git a/config/config.go b/config/config.go
index 4bb52e4..9fbdd2a 100644
--- a/config/config.go
+++ b/config/config.go
@@ -2,7 +2,7 @@
 package config
 
 import (
-	"path"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"os"
@@ -43,7 +43,7 @@ type OSDFConfig struct {
 // need to manually configure the location of the director endpoint.
 //
 func GetPreferredPrefix() string {
-	arg0 := strings.ToUpper(path.Base(os.Args[0]))
+	arg0 := strings.ToUpper(filepath.Base(os.Args[0]))
 	log.Errorln("Current arg0:", arg0)
 	underscore_idx := strings.Index(arg0, "_")
 	if underscore_idx != -1 {
diff --git a/namespaces_test.go b/namespaces_test.go
index 44ddda2..4b39a14 100644
--- a/namespaces_test.go
+++ b/namespaces_test.go
@@ -73,7 +73,8 @@ func TestMatchNamespace(t *testing.T) {
 		t.Error(err)
 	}
 	viper.Reset()
-	config.Init()
+	err = config.Init()
+	assert.Nil(t, err)
 
 	ns, err := MatchNamespace("/osgconnect/private/path/to/file.txt")
 	assert.NoError(t, err, "Failed to parse namespace")
@@ -158,7 +159,8 @@ func TestFullNamespace(t *testing.T) {
 func TestDownloadNamespaces(t *testing.T) {
 	os.Setenv("STASH_NAMESPACE_URL", "https://topology-itb.opensciencegrid.org/stashcache/namespaces")
 	viper.Reset()
-	config.Init()
+	err := config.Init()
+	assert.Nil(t, err)
 	fmt.Printf("Prefix %s; STASH_NAMESPACE_URL: %s; config NamespaceURL: %s", config.GetPreferredPrefix(), os.Getenv("STASH_NAMESPACE_URL"), viper.GetString("NamespaceURL"))
 	defer os.Unsetenv("STASH_NAMESPACE_URL")
 	namespaceBytes, err := downloadNamespace()
@@ -170,7 +172,8 @@ func TestDownloadNamespaces(t *testing.T) {
 func TestDownloadNamespacesFail(t *testing.T) {
 	os.Setenv("STASH_NAMESPACE_URL", "https://doesnotexist.org.blah/namespaces.json")
 	viper.Reset()
-	config.Init()
+	err := config.Init()
+	assert.Nil(t, err)
 	defer os.Unsetenv("STASH_NAMESPACE_URL")
 	namespaceBytes, err := downloadNamespace()
 	assert.Error(t, err, "Failed to download namespaces")
@@ -181,7 +184,8 @@ func TestGetNamespaces(t *testing.T) {
 	// Set the environment to an invalid URL, so it is forced to use the "built-in" namespaces.json
 	os.Setenv("STASH_NAMESPACE_URL", "https://doesnotexist.org.blah/namespaces.json")
 	viper.Reset()
-	config.Init()
+	err := config.Init()
+	assert.Nil(t, err)
 	defer os.Unsetenv("STASH_NAMESPACE_URL")
 	namespaces, err := GetNamespaces()
 	assert.NoError(t, err, "Failed to get namespaces")