diff --git a/src/js/game/systems/belt.js b/src/js/game/systems/belt.js
index f099f26c..685bbe53 100644
--- a/src/js/game/systems/belt.js
+++ b/src/js/game/systems/belt.js
@@ -546,6 +546,7 @@ export class BeltSystem extends GameSystemWithFilter {
             return;
         }
 
+        parameters.context.globalAlpha = 0.5;
         const contents = chunk.wireContents;
         for (let y = 0; y < globalConfig.mapChunkSize; ++y) {
             for (let x = 0; x < globalConfig.mapChunkSize; ++x) {
@@ -563,7 +564,7 @@ export class BeltSystem extends GameSystemWithFilter {
                 }
             }
         }
-        1;
+        parameters.context.globalAlpha = 1;
     }
 
     /**