diff -up chemtool-1.6.14/chemtool.desktop.d chemtool-1.6.14/chemtool.desktop
--- chemtool-1.6.14/chemtool.desktop.d	2007-11-10 22:12:35.000000000 +0100
+++ chemtool-1.6.14/chemtool.desktop	2017-02-21 01:29:37.499144162 +0100
@@ -4,9 +4,10 @@ Name=Chemtool
 Comment=The molecules drawing program (2D)
 Comment[cs]=Kreslení chemických vzorců
 Comment[de]=Moleküleditor
+Comment[pl]=Edytor molekuł
 Exec=chemtool 
-Icon=chemtool.png
+Icon=chemtool
 Terminal=false
 Type=Application
 MimeType=application/x-chemtool
-Categories=Application;Chemistry
+Categories=Application;Chemistry;