diff --git a/.Floppies/A2OSX.BUILD.po b/.Floppies/A2OSX.BUILD.po
index ee1b63a2..d6aa0559 100644
Binary files a/.Floppies/A2OSX.BUILD.po and b/.Floppies/A2OSX.BUILD.po differ
diff --git a/LIB/LIBTCPIP.S.TCP.txt b/LIB/LIBTCPIP.S.TCP.txt
index d95cfb47..4a352969 100644
--- a/LIB/LIBTCPIP.S.TCP.txt
+++ b/LIB/LIBTCPIP.S.TCP.txt
@@ -527,9 +527,9 @@ TCP.OUT.SendOptA
 				dey
 				lda (ZPPtrSKT),y
 				
-				ldy #S.TCP.WINDOW
+				ldy #S.TCP.WINDOW+1
 				sta (ZPFrameOutPtr),y
-				iny
+				dey
 				txa
 				sta (ZPFrameOutPtr),y