diff --git a/angular/src/directives/navigation/stack-controller.ts b/angular/src/directives/navigation/stack-controller.ts
index 3274277833..a7713fb80a 100644
--- a/angular/src/directives/navigation/stack-controller.ts
+++ b/angular/src/directives/navigation/stack-controller.ts
@@ -127,7 +127,7 @@ export class StackController {
      * Save any custom animation so that navigating
      * back will use this custom animation by default.
      */
-    if (animationBuilder !== undefined && leavingView) {
+    if (leavingView) {
       leavingView.animationBuilder = animationBuilder;
     }
 
@@ -190,13 +190,16 @@ export class StackController {
     if (leavingView) {
       const views = this.getStack(leavingView.stackId);
       const enteringView = views[views.length - 2];
+      const customAnimation = enteringView.animationBuilder;
+
       return this.wait(() => {
         return this.transition(
           enteringView, // entering view
           leavingView, // leaving view
           'back',
           this.canGoBack(2),
-          true
+          true,
+          customAnimation
         );
       });
     }