diff --git a/BizHawk.Client.Common/movie/bk2/Bk2Movie.cs b/BizHawk.Client.Common/movie/bk2/Bk2Movie.cs
index b030fc388d..93818b6998 100644
--- a/BizHawk.Client.Common/movie/bk2/Bk2Movie.cs
+++ b/BizHawk.Client.Common/movie/bk2/Bk2Movie.cs
@@ -90,7 +90,7 @@ namespace BizHawk.Client.Common
 		public virtual void Truncate(int frame)
 		{
 			// This is a bad way to do multitrack logic, pass the info in instead of going to the global
-			// and it is weird for Truncte to possibly not truncate
+			// and it is weird for Truncate to possibly not truncate
 			if (!Global.MovieSession.MultiTrack.IsActive)
 			{
 				if (frame < _log.Count)
diff --git a/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs b/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs
index 533d0bacec..50bbcea683 100644
--- a/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs
+++ b/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs
@@ -25,13 +25,17 @@ namespace BizHawk.Client.Common
 			StateManager.Capture();
 		}
 
+        /// <summary>
+        /// Truncate all frames including starting frame to end of movie.
+        /// </summary>
+        /// <param name="frame">First frame to be truncated.</param>
 		public override void Truncate(int frame)
 		{
 			base.Truncate(frame);
 
 			if (frame < LagLog.Count)
 			{
-				LagLog.RemoveRange(frame + 2, LagLog.Count - frame - 1);
+				LagLog.RemoveRange(frame, LagLog.Count - frame - 1);
 			}
 
 			StateManager.Invalidate(frame + 1);