diff --git a/sandpack-react/src/common/OpenInCodeSandboxButton/UnstyledOpenInCodeSandboxButton.tsx b/sandpack-react/src/common/OpenInCodeSandboxButton/UnstyledOpenInCodeSandboxButton.tsx
index e0a8d23f7..9092d41be 100644
--- a/sandpack-react/src/common/OpenInCodeSandboxButton/UnstyledOpenInCodeSandboxButton.tsx
+++ b/sandpack-react/src/common/OpenInCodeSandboxButton/UnstyledOpenInCodeSandboxButton.tsx
@@ -38,23 +38,32 @@ const getFileParameters = (
 export const UnstyledOpenInCodeSandboxButton: React.FC<
   React.HtmlHTMLAttributes<unknown>
 > = ({ children, ...props }) => {
-  const [paramsValues, setParamsValues] = React.useState("");
   const { sandpack } = useSandpack();
   const formRef = React.useRef<HTMLFormElement>(null);
 
+  const [paramsValues, setParamsValues] = React.useState<URLSearchParams>();
+
   React.useEffect(
     function debounce() {
       const timer = setTimeout(() => {
         const params = getFileParameters(sandpack.files, sandpack.environment);
 
-        setParamsValues(params);
+        const searchParams = new URLSearchParams({
+          parameters: params,
+          query: new URLSearchParams({
+            file: sandpack.activePath,
+            "from-sandpack": "true",
+          }).toString(),
+        });
+
+        setParamsValues(searchParams);
       }, 600);
 
       return (): void => {
         clearTimeout(timer);
       };
     },
-    [sandpack.environment, sandpack.files]
+    [sandpack.activePath, sandpack.environment, sandpack.files]
   );
 
   // Register the usage of the codesandbox link
@@ -63,19 +72,11 @@ export const UnstyledOpenInCodeSandboxButton: React.FC<
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 
-  const searchParams = new URLSearchParams({
-    parameters: paramsValues,
-    query: new URLSearchParams({
-      file: sandpack.activePath,
-      "from-sandpack": "true",
-    }).toString(),
-  });
-
   /**
    * This is a safe limit to avoid too long requests (401),
    * as all parameters are attached in the URL
    */
-  if (paramsValues.length > 1500) {
+  if ((paramsValues?.get?.("parameters")?.length ?? 0) > 1500) {
     return (
       <button
         onClick={(): void => formRef.current?.submit()}
@@ -84,7 +85,7 @@ export const UnstyledOpenInCodeSandboxButton: React.FC<
       >
         <form ref={formRef} action={CSB_URL} method="POST" target="_blank">
           {Array.from(
-            searchParams as unknown as Array<[string, string]>,
+            paramsValues as unknown as Array<[string, string]>,
             ([k, v]) => (
               <input key={k} name={k} type="hidden" value={v} />
             )
@@ -97,7 +98,7 @@ export const UnstyledOpenInCodeSandboxButton: React.FC<
 
   return (
     <a
-      href={`${CSB_URL}?${searchParams.toString()}`}
+      href={`${CSB_URL}?${paramsValues?.toString()}`}
       rel="noreferrer noopener"
       target="_blank"
       title="Open in CodeSandbox"