diff --git a/pve-mod-gui-sensors.sh b/pve-mod-gui-sensors.sh
index 4d15abe..218c7de 100644
--- a/pve-mod-gui-sensors.sh
+++ b/pve-mod-gui-sensors.sh
@@ -384,7 +384,7 @@ function install_mod {
 			upsCmd="upsc \"$upsConnection\" 2>/dev/null"
 		fi
 
-		sed -i '/my \$dinfo = df('\''\/'\'', 1);/i\'$'\t''$res->{upsc} = `'"$upsCmd"'`;\n' "$NODES_PM_FILE"
+		sed -i "/my \$dinfo = df('\/', 1);/i\\\t\t\$res->{upsc} = \`$upsCmd\`;" "$NODES_PM_FILE"
 		msg "UPS output added to \"$NODES_PM_FILE\"."
 	fi