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 28e04b87b..8c3176c47 100644
--- a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
+++ b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
@@ -1410,7 +1410,8 @@ public class Animation {
 
 		/** Sets the time, mix, softness, bend direction, compress, and stretch for the specified frame.
 		 * @param frame Between 0 and <code>frameCount</code>, inclusive.
-		 * @param time The frame time in seconds. */
+		 * @param time The frame time in seconds.
+		 * @param bendDirection 1 or -1. */
 		public void setFrame (int frame, float time, float mix, float softness, int bendDirection, boolean compress,
 			boolean stretch) {
 			frame *= ENTRIES;
diff --git a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/AnimationState.java b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/AnimationState.java
index 433cdc95d..604d85361 100644
--- a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/AnimationState.java
+++ b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/AnimationState.java
@@ -1151,9 +1151,9 @@ public class AnimationState {
 			this.mixDuration = mixDuration;
 		}
 
-		/** Controls how properties keyed in the animation are mixed with lower tracks. Defaults to {@link MixBlend#replace}, which
-		 * replaces the values from the lower tracks with the animation values. {@link MixBlend#add} adds the animation values to
-		 * the values from the lower tracks.
+		/** Controls how properties keyed in the animation are mixed with lower tracks. Defaults to {@link MixBlend#replace}.
+		 * <p>
+		 * Track entries on track 0 ignore this setting and always use {@link MixBlend#first}.
 		 * <p>
 		 * The <code>mixBlend</code> can be set for a new track entry only before {@link AnimationState#apply(Skeleton)} is first
 		 * called. */