diff --git a/openglcanvas.cpp b/openglcanvas.cpp
index ac15b901b7591ce41d4e5e78b8a341d20f3d3be3..2b91e21a4054a65a034a4d93f6f6e327bd5aac57 100644
--- a/openglcanvas.cpp
+++ b/openglcanvas.cpp
@@ -722,7 +722,17 @@ void OpenGLCanvas::wheelEvent(QWheelEvent *event){
         if(event->modifiers()==Qt::ShiftModifier){
             change_fov_max(fov_max+((double)event->delta())/30);
         }else{
-            change_fov(fov+((double)event->delta())/30);
+            int new_fov=fov+event->delta()/30;
+            change_fov((double)new_fov);
+            if(auto_fov_max){
+                if(new_fov<60)
+                    change_fov_max(60);
+                else
+                    if(new_fov>180)
+                        change_fov_max(1);
+                    else
+                        change_fov_max(90-new_fov/2);
+            }
         }
     }
 }