diff --git a/Source/SwiftyCamViewController.swift b/Source/SwiftyCamViewController.swift
index 5e0259f..6a47639 100644
--- a/Source/SwiftyCamViewController.swift
+++ b/Source/SwiftyCamViewController.swift
@@ -151,6 +151,7 @@ open class SwiftyCamViewController: UIViewController {
     
     public var allowAutoRotate                = false
     
+    /// Specifies the [videoGravity](https://developer.apple.com/reference/avfoundation/avcapturevideopreviewlayer/1386708-videogravity) for the preview layer.
     public var videoGravity                   : SwiftyCamVideoGravity = .resizeAspect