diff --git a/src/Fl_Window_fullscreen.cxx b/src/Fl_Window_fullscreen.cxx
index ab9e6c6bb5..ecaa2b0863 100644
--- a/src/Fl_Window_fullscreen.cxx
+++ b/src/Fl_Window_fullscreen.cxx
@@ -42,7 +42,6 @@ void Fl_Window::fullscreen() {
   no_fullscreen_h = h();
   if (shown() && !(flags() & Fl_Widget::FULLSCREEN)) {
     pWindowDriver->fullscreen_on();
-  } else {
     set_flag(FULLSCREEN);
   }
 }
@@ -50,7 +49,6 @@ void Fl_Window::fullscreen() {
 void Fl_Window::fullscreen_off(int X,int Y,int W,int H) {
   if (shown() && (flags() & Fl_Widget::FULLSCREEN)) {
     pWindowDriver->fullscreen_off(X, Y, W, H);
-  } else {
     clear_flag(FULLSCREEN);
   }
   no_fullscreen_x = no_fullscreen_y = no_fullscreen_w = no_fullscreen_h = 0;