diff --git a/src/client/stores/CalculationStore/index.ts b/src/client/stores/CalculationStore/index.ts
index 1dfc2ce..995b921 100644
--- a/src/client/stores/CalculationStore/index.ts
+++ b/src/client/stores/CalculationStore/index.ts
@@ -41,9 +41,9 @@ reactionEffects.map(reactionEffectBuilder => {
   );
   return reaction(reactionEffect.expression, reactionEffect.effect, {
     ...reactionEffect.options,
-    equals: (nextParams, prevParams) => {
-      return isEqual(nextParams, prevParams);
-    },
+    equals:
+      reactionEffect.options?.equals ||
+      ((nextParams, prevParams) => isEqual(nextParams, prevParams)),
   });
 });