diff --git a/backend/fichier/api.go b/backend/fichier/api.go
index 3558e5661..51c7bd61b 100644
--- a/backend/fichier/api.go
+++ b/backend/fichier/api.go
@@ -319,7 +319,7 @@ func (f *Fs) removeFolder(ctx context.Context, name string, folderID int) (respo
 		return nil, errors.Wrap(err, "couldn't remove folder")
 	}
 	if response.Status != "OK" {
-		return nil, errors.New("Can't remove non-empty dir")
+		return nil, errors.Errorf("can't remove folder: %s", response.Message)
 	}
 
 	// fs.Debugf(f, "Removed Folder with id `%s`", directoryID)
diff --git a/backend/fichier/fichier.go b/backend/fichier/fichier.go
index c46f45c24..753eadf10 100644
--- a/backend/fichier/fichier.go
+++ b/backend/fichier/fichier.go
@@ -452,7 +452,7 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 		return nil, errors.Wrap(err, "couldn't move file")
 	}
 	if resp.Status != "OK" {
-		return nil, errors.New("couldn't move file")
+		return nil, errors.Errorf("couldn't move file: %s", resp.Message)
 	}
 
 	file, err := f.readFileInfo(ctx, resp.URLs[0])
@@ -486,7 +486,7 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
 		return nil, errors.Wrap(err, "couldn't move file")
 	}
 	if resp.Status != "OK" {
-		return nil, errors.New("couldn't move file")
+		return nil, errors.Errorf("couldn't move file: %s", resp.Message)
 	}
 
 	file, err := f.readFileInfo(ctx, resp.URLs[0].ToURL)
diff --git a/backend/fichier/structs.go b/backend/fichier/structs.go
index 40efd0032..c00d05989 100644
--- a/backend/fichier/structs.go
+++ b/backend/fichier/structs.go
@@ -64,8 +64,9 @@ type MoveFileRequest struct {
 
 // MoveFileResponse is the response structure of the corresponding request
 type MoveFileResponse struct {
-	Status string   `json:"status"`
-	URLs   []string `json:"urls"`
+	Status  string   `json:"status"`
+	Message string   `json:"message"`
+	URLs    []string `json:"urls"`
 }
 
 // CopyFileRequest is the request structure of the corresponding request
@@ -77,9 +78,10 @@ type CopyFileRequest struct {
 
 // CopyFileResponse is the response structure of the corresponding request
 type CopyFileResponse struct {
-	Status string     `json:"status"`
-	Copied int        `json:"copied"`
-	URLs   []FileCopy `json:"urls"`
+	Status  string     `json:"status"`
+	Message string     `json:"message"`
+	Copied  int        `json:"copied"`
+	URLs    []FileCopy `json:"urls"`
 }
 
 // FileCopy is used in the the CopyFileResponse