diff --git a/app/controllers/csvfiles_controller.rb b/app/controllers/csvfiles_controller.rb
index d9631ebc22..c43510011b 100644
--- a/app/controllers/csvfiles_controller.rb
+++ b/app/controllers/csvfiles_controller.rb
@@ -7,7 +7,7 @@ def setter
       filetitle: params[:filetitle],
       filedescription: params[:filedescription],
       filepath: params[:object],
-      filename: "file" + Time.now.to_i.to_s,
+      filename: "file#{Time.now.to_i}",
       filestring: params[:filestring]
     )
     render json: @csvfile if @csvfile.save
@@ -28,7 +28,7 @@ def add_graphobject
       filetitle: params[:filetitle],
       filedescription: params[:filedescription],
       filepath: params[:object],
-      filename: "file" + Time.now.to_i.to_s,
+      filename: "file#{Time.now.to_i}",
       filestring: params[:filestring],
       graphobject: params[:graphobject]
     )