diff --git a/mobile/android/base/ui/PanZoomController.java b/mobile/android/base/ui/PanZoomController.java
index 5a38269ef22..b027a9a88ce 100644
--- a/mobile/android/base/ui/PanZoomController.java
+++ b/mobile/android/base/ui/PanZoomController.java
@@ -516,7 +516,9 @@ public class PanZoomController
                 mSnapAnim = new EaseOutAnimation(viewportPos, viewportPos - getExcess());
                 break;
             default:
-                throw new RuntimeException("Not overscrolled at startSnap()");
+                // no overscroll to deal with, so we're done
+                mFlingState = FlingStates.STOPPED;
+                return;
             }
 
             mFlingState = FlingStates.SNAPPING;