diff --git a/code/fd-stream.lisp b/code/fd-stream.lisp
index 17cafc9c8a39f05ac879048f7f0e58fa064e319f..706927f72c42ac8740434b8d620c7b234cb65cd2 100644
--- a/code/fd-stream.lisp
+++ b/code/fd-stream.lisp
@@ -5,7 +5,7 @@
 ;;; Carnegie Mellon University, and has been placed in the public domain.
 ;;;
 (ext:file-comment
-  "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/code/fd-stream.lisp,v 1.58 2002/02/04 17:22:14 toy Exp $")
+  "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/code/fd-stream.lisp,v 1.59 2002/04/03 18:30:40 pw Exp $")
 ;;;
 ;;; **********************************************************************
 ;;;
@@ -857,7 +857,7 @@
 		  (eql size 4))
 	  ;; Support for n-byte operations on 8-, 16-, and 32-bit streams
 	  (setf (fd-stream-n-bin stream) #'fd-stream-read-n-bytes)
-	  (when buffer-p
+	  (when (and buffer-p (eql size 1))
 	    (setf (lisp-stream-in-buffer stream)
 		  (make-array in-buffer-length
 			      :element-type '(unsigned-byte 8)))))