diff --git a/src/ui/dialog/startup.cpp b/src/ui/dialog/startup.cpp
index bc4cabcdee4ccb9653a3b66eb24f2fa90828d8b7..20c2a67aa389668e228280858f38717114de5ef6 100644
--- a/src/ui/dialog/startup.cpp
+++ b/src/ui/dialog/startup.cpp
@@ -16,6 +16,9 @@
 #include <glibmm/i18n.h>
 #include <glibmm/convert.h>
 #include <glibmm/fileutils.h>
+#ifdef GDK_WINDOWING_WAYLAND
+#include <gdk/wayland/gdkwayland.h>
+#endif
 #include <gdkmm/display.h>
 #include <gtkmm/builder.h>
 #include <gtkmm/button.h>
@@ -164,7 +167,18 @@ StartScreen::StartScreen()
 
 void StartScreen::show_now()
 {
-    set_default_size(700, 0);
+    int default_height = 0; // 0 = automatic size
+#ifdef GDK_WINDOWING_WAYLAND
+    if (GDK_IS_WAYLAND_DISPLAY(this->get_display()->gobj())) {
+        // Workaround: On Wayland, the splash screen is initially centered but then does not re-center when it increases
+        // height to become the welcome dialog. As a result, the welcome dialog is so off-center that the lower buttons
+        // are cut off. To work around, we request a larger initial height even if this makes the splash screen look ugly
+        // due to lots of empty space at the bottom.
+        // https://gitlab.com/inkscape/inkscape/-/issues/5692
+        default_height = 600;
+    }
+#endif
+    set_default_size(700, default_height);
     set_resizable(false);
 
     // Show the main banner when already welcomed for the first time