desktop-file-validate:

leafpad.desktop: error: value "text/plain" for string list key "MimeType" in group "Desktop Entry"
does not have a semicolon (';') as trailing character

leafpad.desktop: warning: key "Encoding" in group "Desktop Entry" is deprecated

--- a/data/leafpad.desktop.in
+++ b/data/leafpad.desktop.in
@@ -1,10 +1,9 @@
 [Desktop Entry]
-Encoding=UTF-8
 _Name=Leafpad
 _Comment=Simple text editor
 Exec=leafpad %f
 Icon=leafpad
 Terminal=false
 Type=Application
-MimeType=text/plain
+MimeType=text/plain;
 Categories=GTK;Utility;TextEditor;