diff --git a/gtk+-2/pinentry-gtk-2.c b/gtk+-2/pinentry-gtk-2.c
--- a/gtk+-2/pinentry-gtk-2.c
+++ b/gtk+-2/pinentry-gtk-2.c
@@ -554,6 +554,45 @@
   return button;
 }
 
+static void
+move_window_to_active_monitor (GtkWindow *win)
+{
+  GdkScreen *screen;
+  GdkWindow *active_window;
+  GdkRectangle rect;
+  int monitor, width, height, cx, cy;
+
+  screen = gdk_screen_get_default ();
+
+  /* No need to bother if there's only one monitor. */
+  if (gdk_screen_get_n_monitors (screen) == 1)
+    return;
+
+  active_window = gdk_screen_get_active_window (screen);
+  if (active_window)
+    {
+      monitor = gdk_screen_get_monitor_at_window (screen, active_window);
+      gdk_display_get_pointer (gdk_screen_get_display (screen), NULL,
+			       &cx, &cy, NULL);
+
+      /* We need to act only if the cursor is not on the same monitor
+       * than the focused window. */
+      if (gdk_screen_get_monitor_at_point (screen, cx, cy) != monitor)
+        {
+	  gdk_screen_get_monitor_geometry (screen, monitor, &rect);
+
+	  /* We should use GDK_GRAVITY_CENTER so that we don't have
+	   * to care about the window's size, but I could not make it
+	   * to work... */
+	  gtk_window_get_size (win, &width, &height);
+	  gtk_window_move (win,
+			   rect.x + rect.width  / 2 - width  / 2,
+			   rect.y + rect.height / 2 - height / 2);
+	}
+
+      g_object_unref (active_window);
+    }
+}
 
 static GtkWidget *
 create_window (pinentry_t ctx)
@@ -889,6 +928,7 @@
   gtk_window_set_position (GTK_WINDOW (win), GTK_WIN_POS_CENTER);
   gtk_window_set_keep_above (GTK_WINDOW (win), TRUE);
   gtk_widget_show_all (win);
+  move_window_to_active_monitor (GTK_WINDOW (win));
   gtk_window_present (GTK_WINDOW (win));  /* Make sure it has the focus.  */
 
   if (pinentry->timeout > 0)