diff --git a/src/output.c b/src/output.c
index de0d412..48f0782 100644
--- a/src/output.c
+++ b/src/output.c
@@ -5,14 +5,15 @@
 #include "x11/screen.h"
 #include "wayland/wl.h"
 
+bool running_xwayland;
+
 const bool is_running_wayland(void) {
         char* wayland_display = getenv("WAYLAND_DISPLAY");
         return !(wayland_display == NULL);
 }
 
 const bool is_running_xwayland(void) {
-        // FIXME
-        return false;
+        return running_xwayland;
 }
 
 const struct output output_x11 = {
@@ -57,6 +58,7 @@ const struct output output_wl = {
 
 const struct output* output_create(bool force_xwayland)
 {
+        running_xwayland = force_xwayland;
         if (!force_xwayland && is_running_wayland()) {
                 LOG_I("Using Wayland output");
                 return &output_wl;
diff --git a/src/queues.c b/src/queues.c
index 6892953..62313ad 100644
--- a/src/queues.c
+++ b/src/queues.c
@@ -143,9 +143,12 @@ static bool queues_notification_is_finished(struct notification *n, struct dunst
 
         bool is_idle = status.fullscreen ? false : status.idle;
 
+        /* There is no way to detect if the user is idle
+         * on xwayland, so assume they aren't */
+        if (is_running_xwayland()) is_idle = false;
+
         /* don't timeout when user is idle */
-        /* NOTE: Idle is not working on xwayland */
-        if (is_idle && !n->transient && !is_running_xwayland()) {
+        if (is_idle && !n->transient) {
                 n->start = time_monotonic_now();
                 return false;
         }