diff --git a/bootstrap.fs b/bootstrap.fs
index a68faa3..9703971 100644
--- a/bootstrap.fs
+++ b/bootstrap.fs
@@ -1907,6 +1907,10 @@ variable inputstreams
 
 stdin_ push-inputstream
 
+: sourcefilename ( -- c-addr )
+    inputstreams @ input>file @ file>name
+;
+
 \ Replacing parser functions using input stream.
 
 variable source-buffer BUFSIZE allot
@@ -2594,7 +2598,7 @@ need-defined (read)
         insn:docol insn:exit insn:lit insn:litstring insn:branch insn:0branch
 
         words id. name>string name>link
-        include included source >in
+        include included source >in sourcefilename
         next-arg shift-args arg argv argc version runtime copyright
 
         [if] [unless] [else] [then] defined? private{ }private export
diff --git a/test/core.fs b/test/core.fs
index 03adadd..8bcc5d4 100644
--- a/test/core.fs
+++ b/test/core.fs
@@ -809,6 +809,9 @@ skip T{ bl gs3 drop -> 0 }T            \ blank line return zero-length string
 \ T{ gs4 123 456
 \ -> }T
 
+testing sourcefilename
+T{ sourcefilename s" test/core.fs" streq -> <true> }T
+
 \ ------------------------------------------------------------------------
 testing <# # #s #> hold sign base >number hex decimal