diff --git a/dom/base/nsGlobalWindowInner.cpp b/dom/base/nsGlobalWindowInner.cpp
index 8de568094195..7e3532bcb3ab 100644
--- a/dom/base/nsGlobalWindowInner.cpp
+++ b/dom/base/nsGlobalWindowInner.cpp
@@ -5479,6 +5479,10 @@ void nsGlobalWindowInner::SetCsp(nsIContentSecurityPolicy* aCsp) {
   mClientSource->SetCsp(aCsp);
   // Also cache the CSP within the document
   mDoc->SetCsp(aCsp);
+
+  if (mWindowGlobalChild) {
+    mWindowGlobalChild->SendSetClientInfo(mClientSource->Info().ToIPC());
+  }
 }
 
 void nsGlobalWindowInner::SetPreloadCsp(nsIContentSecurityPolicy* aPreloadCsp) {
@@ -5488,6 +5492,10 @@ void nsGlobalWindowInner::SetPreloadCsp(nsIContentSecurityPolicy* aPreloadCsp) {
   mClientSource->SetPreloadCsp(aPreloadCsp);
   // Also cache the preload CSP within the document
   mDoc->SetPreloadCsp(aPreloadCsp);
+
+  if (mWindowGlobalChild) {
+    mWindowGlobalChild->SendSetClientInfo(mClientSource->Info().ToIPC());
+  }
 }
 
 nsIContentSecurityPolicy* nsGlobalWindowInner::GetCsp() {