diff --git a/config.cpp b/config.cpp
index 6df56b01..2c4aa83e 100644
--- a/config.cpp
+++ b/config.cpp
@@ -1925,6 +1925,7 @@ int read_config_args() {
 
   else if(argis("-noshadow")) { noshadow = true; }
   else if(argis("-bright")) { bright = true; }
+  else if(argis("-gridon")) { vid.grid = true; }
 
 // non-configurable options
   else if(argis("-vsync_off")) {