diff --git a/calamares.desktop b/calamares.desktop
old mode 100755
new mode 100644
index cd8a353c9..834c4a518
--- a/calamares.desktop
+++ b/calamares.desktop
@@ -1,4 +1,3 @@
-#!/usr/bin/env xdg-open
 [Desktop Entry]
 Type=Application
 Version=1.0
@@ -6,7 +5,7 @@ Name=Install System
 GenericName=System Installer
 Keywords=calamares;system;installer;
 TryExec=calamares
-Exec=sh -c "pkexec calamares"
+Exec=pkexec /usr/bin/calamares
 Comment=Calamares — System Installer
 Icon=calamares
 Terminal=false