diff --git a/src/backend/wayland/wl_backend.c b/src/backend/wayland/wl_backend.c
index 4d4dc3c..8c485ba 100644
--- a/src/backend/wayland/wl_backend.c
+++ b/src/backend/wayland/wl_backend.c
@@ -3480,6 +3480,12 @@ wl_signalfd_handler(int fd, uint32_t mask, void *data)
     if (n != (ssize_t)sizeof(info))
         return 0;
 
+    if (info.ssi_signo == SIGUSR2) {
+        wwarning("wl_backend: signalfd received SIGUSR2 - rereading defaults");
+        wDefaultsCheckDomains(NULL);
+        return 0;
+    }
+
     wwarning("wl_backend: signalfd received signal %u - terminating event loop",
              (unsigned)info.ssi_signo);
 
@@ -3571,6 +3577,7 @@ wl_event_loop_run(void)
         sigaddset(&ss, SIGTERM);
         sigaddset(&ss, SIGINT);
         sigaddset(&ss, SIGHUP);
+        sigaddset(&ss, SIGUSR2);
 
         wl_state.sigfd = signalfd(-1, &ss, SFD_NONBLOCK | SFD_CLOEXEC);
         if (wl_state.sigfd >= 0) {