diff --git a/files/en-us/mozilla/add-ons/webextensions/content_scripts/cloneinto/index.md b/files/en-us/mozilla/add-ons/webextensions/content_scripts/cloneinto/index.md
index 28dbb99abe5b503..17702565104d016 100644
--- a/files/en-us/mozilla/add-ons/webextensions/content_scripts/cloneinto/index.md
+++ b/files/en-us/mozilla/add-ons/webextensions/content_scripts/cloneinto/index.md
@@ -27,7 +27,7 @@ This enables privileged code, such as an extension, to share an object with less
 let clonedObject = cloneInto(
   obj,               // object
   targetScope,       // object
-  options            // object
+  options            // optional object
 );
 ```
 
diff --git a/files/en-us/mozilla/add-ons/webextensions/content_scripts/exportfunction/index.md b/files/en-us/mozilla/add-ons/webextensions/content_scripts/exportfunction/index.md
index 5565a5b93dba849..b9bb2b1de2591f1 100644
--- a/files/en-us/mozilla/add-ons/webextensions/content_scripts/exportfunction/index.md
+++ b/files/en-us/mozilla/add-ons/webextensions/content_scripts/exportfunction/index.md
@@ -21,7 +21,7 @@ See [Exporting functions that take arguments](#Exporting_functions_that_take_arg
 let exportFunctionuating = exportFunction(
   func,              // function
   targetScope,       // object
-  options            // object
+  options            // optional object
 );
 ```