diff --git a/fcore/buffer.sml b/fcore/buffer.sml
index 3e5469d..96f3bd0 100644
--- a/fcore/buffer.sml
+++ b/fcore/buffer.sml
@@ -205,6 +205,6 @@ buildTextString ( startIdx, rStrHd, [], 5, 5, 5
              * else we can do. *)
             []
     in
-      Vector.concat acc
+      (Vector.concat acc, lineGap)
     end
 end
diff --git a/shell/shell.sml b/shell/shell.sml
index 6765d45..2bc1e4e 100644
--- a/shell/shell.sml
+++ b/shell/shell.sml
@@ -23,7 +23,7 @@ struct
       val lineGap = ioToLineGap (io, LineGap.empty)
       val _ = TextIO.closeIn io
 
-      val textVec = Buffer.startBuildTextLineGap (0, lineGap, 1920, 1080)
+      val (textVec, _) = Buffer.startBuildTextLineGap (0, lineGap, 1920, 1080)
       val shellState = GlDraw.create window
       val shellState = GlDraw.uploadText (shellState, textVec)
 
diff --git a/shf b/shf
index cdb915b..a2f3311 100755
Binary files a/shf and b/shf differ