diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4eb859b96..c00b4c2456 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ All notable changes to this project will be documented in this file.
 
 - [Multiple] Clarify that downloading to cache does not install (#3400 by: HebaruSan; reviewed: DasSkelett)
 - [Core] Don't include DLC in modpacks by default (#3417 by: HebaruSan; reviewed: DasSkelett)
+- [Multiple] Set GNOME single window property (#3425 by: HebaruSan; reviewed: DasSkelett)
 
 ### Internal
 
diff --git a/debian/ckan-consoleui.desktop b/debian/ckan-consoleui.desktop
index c8afe9932c..886dfa694a 100644
--- a/debian/ckan-consoleui.desktop
+++ b/debian/ckan-consoleui.desktop
@@ -4,7 +4,7 @@ Comment=Comprehensive Kerbal Archive Network Console UI
 Icon=/usr/share/icons/ckan.ico
 Categories=Game;Utility
 Exec=/usr/bin/ckan consoleui
-StartupNotify=true
 Terminal=true
 Type=Application
 Version=1.0
+X-GNOME-SingleWindow=true
diff --git a/debian/ckan.desktop b/debian/ckan.desktop
index ca7630c06a..367dabddc3 100644
--- a/debian/ckan.desktop
+++ b/debian/ckan.desktop
@@ -4,7 +4,7 @@ Comment=Comprehensive Kerbal Archive Network client
 Icon=/usr/share/icons/ckan.ico
 Categories=Game;Utility
 Exec=/usr/bin/ckan
-StartupNotify=true
 Terminal=false
 Type=Application
 Version=1.0
+X-GNOME-SingleWindow=true