diff --git a/rust/src_webpack/src/plant.ts b/rust/src_webpack/src/plant.ts
index ad611a6..93df81a 100644
--- a/rust/src_webpack/src/plant.ts
+++ b/rust/src_webpack/src/plant.ts
@@ -139,13 +139,13 @@ export class PlantView {
     }
 
     update(a: number, b: number) {
-      if (a = 200){
+      if (a == 200){
         this.moistureA.innerText = "error"
       } else {
         this.moistureA.innerText = String(a)
       }
       
-      if (b = 200){
+      if (b == 200){
         this.moistureB.innerText = "error"
       } else {
         this.moistureB.innerText = String(b)