diff --git a/BizHawk.Client.Common/movie/bk2/StringLogs.cs b/BizHawk.Client.Common/movie/bk2/StringLogs.cs
index 3125df524e..08c3e4b28e 100644
--- a/BizHawk.Client.Common/movie/bk2/StringLogs.cs
+++ b/BizHawk.Client.Common/movie/bk2/StringLogs.cs
@@ -65,18 +65,18 @@ namespace BizHawk.Client.Common
 		BinaryReader br;
 		bool mDisk;
 
-		Stream stream;
+		Stream stream;
 		public StreamStringLog(bool disk)
-		{
-			mDisk = disk;
-			if (disk)
-			{
-				var path = TempFileCleaner.GetTempFilename("movieOnDisk");
-				stream = new FileStream(path, FileMode.Create, System.Security.AccessControl.FileSystemRights.FullControl, FileShare.None, 4 * 1024, FileOptions.DeleteOnClose);
-			}
-			else
-			{
-				stream = new AWEMemoryStream();
+		{
+			mDisk = disk;
+			if (disk)
+			{
+				var path = TempFileCleaner.GetTempFilename("movieOnDisk");
+				stream = new FileStream(path, FileMode.Create, System.Security.AccessControl.FileSystemRights.FullControl, FileShare.None, 4 * 1024, FileOptions.DeleteOnClose);
+			}
+			else
+			{
+				stream = new AWEMemoryStream();
 			}
 			bw = new BinaryWriter(stream);
 			br = new BinaryReader(stream);
@@ -105,7 +105,8 @@ namespace BizHawk.Client.Common
 		}
 
 		public void Add(string str)
-		{
+		{
+			stream.Position = stream.Length;
 			Offsets.Add(stream.Position);
 			bw.Write(str);
 			bw.Flush();
@@ -134,7 +135,8 @@ namespace BizHawk.Client.Common
 		}
 
 		public void Insert(int index, string val)
-		{
+		{
+			stream.Position = stream.Length;
 			Offsets.Insert(index, stream.Position);
 			bw.Write(val);
 			bw.Flush();