--- a/toolkit/components/extensions/ExtensionPolicyService.cpp
+++ b/toolkit/components/extensions/ExtensionPolicyService.cpp
@@ -80,21 +80,24 @@ ExtensionPolicyService::ExtensionPolicyS
 
   RegisterObservers();
 }
 
 
 bool
 ExtensionPolicyService::IsExtensionProcess() const
 {
-  if (sRemoteExtensions && XRE_IsContentProcess()) {
-    auto& remoteType = dom::ContentChild::GetSingleton()->GetRemoteType();
-    return remoteType.EqualsLiteral(EXTENSION_REMOTE_TYPE);
+  if (!sRemoteExtensions) {
+    return XRE_IsParentProcess();
   }
-  return XRE_IsParentProcess();
+  if (!XRE_IsContentProcess()) {
+    return false;
+  }
+  auto& remoteType = dom::ContentChild::GetSingleton()->GetRemoteType();
+  return remoteType.EqualsLiteral(EXTENSION_REMOTE_TYPE);
 }
 
 
 WebExtensionPolicy*
 ExtensionPolicyService::GetByURL(const URLInfo& aURL)
 {
   if (aURL.Scheme() == nsGkAtoms::moz_extension) {
     return GetByHost(aURL.Host());