diff --git a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
index 51506630a..5ae81fb19 100644
--- a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
+++ b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
@@ -693,8 +693,7 @@ public class Animation {
 				frameIndex = binarySearch(frames, time, 1) - 1;
 
 			String attachmentName = attachmentNames[frameIndex];
-			skeleton.slots.get(slotIndex)
-				.setAttachment(attachmentName == null ? null : skeleton.getAttachment(slotIndex, attachmentName));
+			slot.setAttachment(attachmentName == null ? null : skeleton.getAttachment(slotIndex, attachmentName));
 		}
 	}