diff --git a/docs/function-file.md b/docs/function-file.md
index 2523e87a1..c9cac693c 100644
--- a/docs/function-file.md
+++ b/docs/function-file.md
@@ -36,8 +36,8 @@ position. You may use it to override the calculated route. If you plan to use
 `version` represents current version of the function. When deploying, it is
 appended to the image as a tag.
 
-`runtime` represents programming language runtime (`go`, `python3`, `java`, etc.)
-and the `docker` runtime when a Dockerfile exists.
+`runtime` represents programming language runtime,  for examples,
+`go`, `python3`, `java`, etc.  and the `docker` runtime when a Dockerfile exists.
 
 `build` (optional) is an array of local shell calls which are used to help
 building the function.