diff --git a/mods/fast_lightmap.js b/mods/fast_lightmap.js
index 58cd9553..f572cb1d 100644
--- a/mods/fast_lightmap.js
+++ b/mods/fast_lightmap.js
@@ -266,8 +266,19 @@ elements.plasma.tick = function(pixel) {
 };
 
 // Wait for loading
-// if it loads too soon then width will be undefined
-setTimeout(() => { initializeLightmap(width, height); }, 700);
+let i = 0;
+let interval = setInterval(() => {
+	if (typeof width !== 'undefined') {
+		clearInterval(interval);
+		initializeLightmap(width, height);
+	}
+	i += 1;
+	// if width is not defined for 3 seconds or longer, it's probably broken, so it will just try run the function anyways to see the error
+	if (i >= 30) {
+		clearInterval(interval);
+		initializeLightmap(width, height);
+	}
+}, 100);
 
 // Add code to functions instead of replacing them
 let originalTick = tick;