diff --git a/bootstrap.fs b/bootstrap.fs
index 3778a71..575074e 100644
--- a/bootstrap.fs
+++ b/bootstrap.fs
@@ -1807,6 +1807,7 @@ variable source-buffer-end source-buffer source-buffer-end !
         \ the buffer is empty
         source-buffer source-buffer-pos !
         source-buffer source-buffer-end !
+        increment-lineno
 
         source-buffer BUFSIZE inputstreams @ input>file @ read-line throw
         if