diff --git a/packages/frontend-core/src/components/ConditionField.svelte b/packages/frontend-core/src/components/ConditionField.svelte
index 32ade43995..58dffc8dea 100644
--- a/packages/frontend-core/src/components/ConditionField.svelte
+++ b/packages/frontend-core/src/components/ConditionField.svelte
@@ -83,7 +83,7 @@
     <div class="field">
       <Input
         disabled={filter.noValue}
-        readonly={true}
+        readonly={isJS}
         value={isJS ? "(JavaScript function)" : readableValue}
         on:change={onChange}
       />
diff --git a/packages/frontend-core/src/components/FilterField.svelte b/packages/frontend-core/src/components/FilterField.svelte
index ecf32ce13e..bf1483c341 100644
--- a/packages/frontend-core/src/components/FilterField.svelte
+++ b/packages/frontend-core/src/components/FilterField.svelte
@@ -169,7 +169,7 @@
       {#if filter.valueType === FilterValueType.BINDING}
         <Input
           disabled={filter.noValue}
-          readonly={true}
+          readonly={isJS}
           value={isJS ? "(JavaScript function)" : readableValue}
           on:change={onChange}
         />