diff --git a/CHANGELOG.md b/CHANGELOG.md
index e33ea03..f03fafa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,9 @@
 
 ##### Bug Fixes
 
-* None
+* Fix a bug where completion wasn't always called when transitioning.
+[Will McGinty](https://github.com/willmcginty)
+[#57](https://github.com/BottleRocketStudios/iOS-UtiliKit/pull/57)
 
 
 ## 1.4.0 (2019-04-30)
diff --git a/Sources/UtiliKit/Container/ContainerViewController.swift b/Sources/UtiliKit/Container/ContainerViewController.swift
index c32aa98..5f9e436 100644
--- a/Sources/UtiliKit/Container/ContainerViewController.swift
+++ b/Sources/UtiliKit/Container/ContainerViewController.swift
@@ -78,7 +78,7 @@ private extension ContainerViewController {
     func transition(to destination: UIViewController, completion: ((Bool) -> Void)? = nil) {
         
         //Ensure that the view is loaded, we're not already transitioning and the transition will result in a move
-        guard isViewLoaded && !isTransitioning, visibleController != destination else { return }
+        guard isViewLoaded && !isTransitioning, visibleController != destination else { completion?(true); return }
         guard let source = visibleController else {
             
             //If we do not already have a visible controller (first launch), skip the animator and contain the child
@@ -90,7 +90,7 @@ private extension ContainerViewController {
             return
         }
         
-        guard delegate?.containerViewController(self, shouldTransitionFrom: source, to: destination) ?? true else { return }
+        guard delegate?.containerViewController(self, shouldTransitionFrom: source, to: destination) ?? true else { completion?(false); return }
         
         //Inform the delegate transitioning is set to begin
         delegate?.containerViewController(self, didBeginTransitioningFrom: source, to: destination)