diff --git a/openglcanvas.cpp b/openglcanvas.cpp
index e0c4ba2cf0cf4744b97f346dc9a950b3ceed3277..3d84d12ebca8a6ab1c2b3ae70300db1416da1389 100644
--- a/openglcanvas.cpp
+++ b/openglcanvas.cpp
@@ -85,6 +85,7 @@ void OpenGLCanvas::change_fov(double f){
 
 void OpenGLCanvas::automaxbutton(bool autovalue){
     auto_fov_max=autovalue;
+    change_fov_max(compute_auto_fov_max(fov));
 }
 
 void OpenGLCanvas::change_fov(int new_fov){