diff --git a/src/timeshift-launcher b/src/timeshift-launcher
index 29b8fc4..5f6cb17 100755
--- a/src/timeshift-launcher
+++ b/src/timeshift-launcher
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-app_command='timeshift-gtk'
+app_command=''"$(realpath "$(dirname "$0")")"'/timeshift-gtk'
 
 if [ "$(id -u)" -eq 0 ]; then
 	# user is admin
@@ -14,11 +14,11 @@ else
 		# script is running in non-interactive mode
 		if [ "$XDG_SESSION_TYPE" = "wayland" ] ; then
 			xhost +SI:localuser:root
-			pkexec ${app_command}
+			pkexec env DISPLAY="$DISPLAY" XAUTHORITY="$XAUTHORITY" "${app_command}"
 			xhost -SI:localuser:root
 			xhost
 		elif command -v pkexec >/dev/null 2>&1; then
-			pkexec ${app_command}
+			pkexec env DISPLAY="$DISPLAY" XAUTHORITY="$XAUTHORITY" "${app_command}"
 		elif command -v sudo >/dev/null 2>&1; then
 			x-terminal-emulator -e "sudo ${app_command}"
 		elif command -v su >/dev/null 2>&1; then