diff --git a/src/Nri/Ui/SideNav/V4.elm b/src/Nri/Ui/SideNav/V4.elm
index 376e1a86..c988206e 100644
--- a/src/Nri/Ui/SideNav/V4.elm
+++ b/src/Nri/Ui/SideNav/V4.elm
@@ -214,7 +214,6 @@ view config navAttributes entries =
 
               else
                 Css.flexBasis (Css.px 5)
-            , MediaQuery.anyMotion [ property "transition" "flex-basis 0.2s" ]
             , flexShrink (num 0)
             , marginRight (px 20)
             , position relative