diff --git a/README.md b/README.md
index ea30128d0..01a7f9c30 100644
--- a/README.md
+++ b/README.md
@@ -432,7 +432,7 @@ const promisify = func =>
         : resolve(result))
     )
 // const stat = promisify(fs.stat)
-// When called, stat returns a promise
+// stat('foo.txt') -> Promise resolves if `foo.txt` exists, otherwise rejects
 ```
 
 ### Random integer in range
diff --git a/snippets/promisify.md b/snippets/promisify.md
index efecd794a..b1c34a20c 100644
--- a/snippets/promisify.md
+++ b/snippets/promisify.md
@@ -13,5 +13,5 @@ const promisify = func =>
         : resolve(result))
     )
 // const stat = promisify(fs.stat)
-// When called, stat returns a promise
+// stat('foo.txt') -> Promise resolves if `foo.txt` exists, otherwise rejects
 ```