diff --git a/openglcanvas.cpp b/openglcanvas.cpp
index 3d84d12ebca8a6ab1c2b3ae70300db1416da1389..8dd0a965a36c96397b924576b29d3ef23e6682b7 100644
--- a/openglcanvas.cpp
+++ b/openglcanvas.cpp
@@ -547,7 +547,7 @@ void OpenGLCanvas::define_triangle_indices(unsigned int * indices, int m, int n)
 int OpenGLCanvas::compute_auto_fov_max(int new_fov){
         if(new_fov<60)
             return 60;
-        if(new_fov>180)
+        if(new_fov>179)
             return 1;
         //if(new_fov>60)
             return (90-new_fov/2);