diff --git a/backend/azureblob/azureblob.go b/backend/azureblob/azureblob.go
index 62a4284f1..e639415bd 100644
--- a/backend/azureblob/azureblob.go
+++ b/backend/azureblob/azureblob.go
@@ -198,7 +198,7 @@ func (f *Fs) Root() string {
 // String converts this Fs to a string
 func (f *Fs) String() string {
 	if f.rootContainer == "" {
-		return fmt.Sprintf("Azure root")
+		return "Azure root"
 	}
 	if f.rootDirectory == "" {
 		return fmt.Sprintf("Azure container %s", f.rootContainer)