diff --git a/force-app/lwc/signals/core.js b/force-app/lwc/signals/core.js
index 7886a9a..8f41b38 100644
--- a/force-app/lwc/signals/core.js
+++ b/force-app/lwc/signals/core.js
@@ -31,6 +31,9 @@ function $signal(value) {
     return _value;
   }
   function setter(newValue) {
+    if (newValue === _value) {
+      return;
+    }
     _value = newValue;
     for (const subscriber of subscribers) {
       subscriber();
diff --git a/src/lwc/signals/core.ts b/src/lwc/signals/core.ts
index 7c49b0e..4d11ff7 100644
--- a/src/lwc/signals/core.ts
+++ b/src/lwc/signals/core.ts
@@ -52,6 +52,9 @@ function $signal<T>(value: T): Signal<T> {
   }
 
   function setter(newValue: T) {
+    if (newValue === _value) {
+      return;
+    }
     _value = newValue;
     for (const subscriber of subscribers) {
       subscriber();