how to add smaller in icon in .desktop - file for slingshot?

Question

i recently installed sublime Text and I add an .desktop file to open it via Slingshot.

But If I search for sublime slingshot just shows a generic icon.

How can I change the .desktop file to get rid of the generic icon.

Here is the .desktop file:

[Desktop Entry]
Version=1.0
Type=Application
Name=Sublime Text
GenericName=Text Editor
Comment=Sophisticated text editor for code, markup and prose
Exec=/home/snowparrot/sublime/sublime_text_3/sublime_text %F
Terminal=false
MimeType=text/plain;
Icon=/home/snowparrot/sublime/sublime_text_3/Icon/128x128/sublime-text.png
Categories=TextEditor;Development;
StartupNotify=true
Actions=Window;Document;

[Desktop Action Window]
Name=Neues Fenster in Sublime
Exec=/opt/sublime_text/sublime_text -n


[Desktop Action Document]
Name=Neue Datei in Sublime
Exec=/opt/sublime_text/sublime_text --command new_file

Answer 1

I would try the AppEditor app, it's a Elementary OS specific app that makes editing those desktop files easy.

Answer 2

I would check the path to your icon file. If it's correct try adding a StartWMClass line to your file. Run xprop WM_CLASS and add the output the the above line.