diff --git a/css-animations-2/Overview.bs b/css-animations-2/Overview.bs
index 5c5f5b9863b8..8ebc56634b72 100644
--- a/css-animations-2/Overview.bs
+++ b/css-animations-2/Overview.bs
@@ -336,9 +336,13 @@ its associated [=keyframes=] are generated as follows:
 
     1.  Add to the |keyframe properties| of |initial keyframe| and |final keyframe|
         the [=computed value=] on |element|
-        of each property in |animated properties|
-        that is not already assigned to a [=keyframe=] in |keyframes|
-        that has a matching |keyframe offset|.
+        of each property in |animated properties|.
+        Skip any property already declared by a [=keyframe=] in |keyframes|
+        that has a matching |keyframe offset|
+        or that is positioned
+        earlier (for |initial keyframe|)
+        or later (for |final keyframe|)
+        in the [=used keyframe order=].
 
 1.  <strong>Sort Frames:</strong>