diff -ru xfce4-notifyd-0.3.4-orig/xfce4-notifyd/xfce-notify-window.c xfce4-notifyd-0.3.4/xfce4-notifyd/xfce-notify-window.c
--- xfce4-notifyd-0.3.4-orig/xfce4-notifyd/xfce-notify-window.c	2016-10-03 18:33:48.000000000 -0300
+++ xfce4-notifyd-0.3.4/xfce4-notifyd/xfce-notify-window.c	2016-11-10 11:26:37.874759008 -0300
@@ -239,14 +239,22 @@
     gtk_widget_set_name (window->summary, "summary");
     gtk_label_set_max_width_chars (GTK_LABEL(window->summary), screen_width);
     gtk_label_set_line_wrap(GTK_LABEL(window->summary), TRUE);
-    gtk_label_set_xalign (GTK_LABEL(window->summary), 0);
+#if GTK_CHECK_VERSION (3, 16, 0)
+    gtk_label_set_xalign (GTK_LABEL (window->summary), 0);
+#else
+    gtk_widget_set_halign (window->summary, GTK_ALIGN_START);
+#endif
     gtk_box_pack_start(GTK_BOX(vbox), window->summary, FALSE, FALSE, 0);
 
     window->body = gtk_label_new(NULL);
     gtk_widget_set_name (window->body, "body");
     gtk_label_set_max_width_chars (GTK_LABEL(window->body), screen_width);
     gtk_label_set_line_wrap(GTK_LABEL(window->body), TRUE);
-    gtk_label_set_xalign (GTK_LABEL(window->body), 0);
+#if GTK_CHECK_VERSION (3, 16, 0)
+    gtk_label_set_xalign (GTK_LABEL (window->body), 0);
+#else
+    gtk_widget_set_halign (window->body, GTK_ALIGN_START);
+#endif
     gtk_box_pack_start(GTK_BOX(vbox), window->body, TRUE, TRUE, 0);
 
     window->button_box = gtk_button_box_new(GTK_ORIENTATION_HORIZONTAL);
diff -ru xfce4-notifyd-0.3.4-orig/xfce4-notifyd-config/main.c xfce4-notifyd-0.3.4/xfce4-notifyd-config/main.c
--- xfce4-notifyd-0.3.4-orig/xfce4-notifyd-config/main.c	2016-11-09 19:09:01.000000000 -0300
+++ xfce4-notifyd-0.3.4/xfce4-notifyd-config/main.c	2016-11-10 11:23:27.202751931 -0300
@@ -385,7 +385,11 @@
             known_application = g_ptr_array_index (known_applications, i);
             hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
             label = gtk_label_new (g_value_get_string (known_application));
+#if GTK_CHECK_VERSION (3, 16, 0)
             gtk_label_set_xalign (GTK_LABEL (label), 0);
+#else
+            gtk_widget_set_halign (label, GTK_ALIGN_START);
+#endif
             mute_switch = gtk_switch_new ();
             gtk_switch_set_active (GTK_SWITCH (mute_switch), TRUE);
             gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);