diff --git a/netlify.toml b/netlify.toml
index b71958890..ef94b071c 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -148,6 +148,11 @@ status = 200
   FR_SITE = "https://mon-entreprise.fr${path}"
   MASTER = 'true'
 
-[context."demo"]
+[context."demo".environment]
   EN_SITE = "https://demo.mon-entreprise.fr${path}?s=m"
   FR_SITE = "https://demo.mon-entreprise.fr${path}"
+
+# TEMP Just for testing the iframe when migrating from embauche to mon-entreprise
+[context."migration-embauche".environment]
+  EN_SITE = "https://deploy-preview-520--syso.netlify.com${path}?s=m"
+  FR_SITE = "https://deploy-preview-520--syso.netlify.com${path}"
\ No newline at end of file
diff --git a/source/sites/mon-entreprise.fr/iframe-integration-script.js b/source/sites/mon-entreprise.fr/iframe-integration-script.js
index 75e477665..c47d69511 100644
--- a/source/sites/mon-entreprise.fr/iframe-integration-script.js
+++ b/source/sites/mon-entreprise.fr/iframe-integration-script.js
@@ -10,8 +10,8 @@ let script = document.getElementById('script-simulateur-embauche'),
 		),
 	integratorUrl = encodeURIComponent(window.location.href.toString()),
 	src =
-		baseUrl +
-		`?s=e&couleur=${couleur}&iframe&integratorUrl=${integratorUrl}&lang=${lang}`
+	baseUrl + (baseUrl.indexOf('?') !== -1 ? '&' : '?') +
+		`couleur=${couleur}&iframe&integratorUrl=${integratorUrl}&lang=${lang}`
 
 const iframe = document.createElement('iframe')
 const iframeAttributes = {