diff --git a/install.sh b/install.sh
index 5634e92..f6e3e3e 100755
--- a/install.sh
+++ b/install.sh
@@ -67,3 +67,16 @@ if command -v systemctl >/dev/null 2>&1; then
 	systemctl --user enable tweak-cpu-usage
 	systemctl --user restart tweak-cpu-usage
 fi
+
+# KDE 6
+if command -v kwriteconfig6 >/dev/null 2>&1; then
+	# set sans font to what we define in fontconfig
+	for key in "General:font" "General:menuFont" "General:toolBarFont" "WM:activeFont"; then
+		IFS=: read group key <<<"$key"
+		kwriteconfig6 --file kdeglobals --group "$group" --key "$key" "Sans Serif,9,-1,5,400,0,0,0,0,0,0,0,0,0,0,1"
+	fi
+	# set smallest sans font
+	kwriteconfig6 --file kdeglobals --group "General" --key "smallestReadableFont" "Sans Serif,8,-1,5,400,0,0,0,0,0,0,0,0,0,0,1"
+	# set mono font to what we define in fontconfig
+	kwriteconfig6 --file kdeglobals --group "General" --key "fixed" "Monospace,9,-1,5,400,0,0,0,0,0,0,0,0,0,0,1"
+fi