diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/tool-input/components/tools/sub-block-renderer.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/tool-input/components/tools/sub-block-renderer.tsx
index 0f9319ace..81ca1f03c 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/tool-input/components/tools/sub-block-renderer.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/tool-input/components/tools/sub-block-renderer.tsx
@@ -78,8 +78,13 @@ export function ToolSubBlockRenderer({
   }, [toolParamValue, setStoreValue, isObjectType])
 
   useEffect(() => {
-    if (storeValue == null) return
-    const stringValue = typeof storeValue === 'string' ? storeValue : JSON.stringify(storeValue)
+    if (storeValue == null && lastPushedToParamsRef.current === null) return
+    const stringValue =
+      storeValue == null
+        ? ''
+        : typeof storeValue === 'string'
+          ? storeValue
+          : JSON.stringify(storeValue)
     if (stringValue !== lastPushedToParamsRef.current) {
       lastPushedToParamsRef.current = stringValue
       lastPushedToStoreRef.current = stringValue