diff --git a/scheme/ikarus.io.ss b/scheme/ikarus.io.ss
index c092560..8a0c6bd 100644
--- a/scheme/ikarus.io.ss
+++ b/scheme/ikarus.io.ss
@@ -1266,7 +1266,7 @@
                                  (refill bv idx cnt)]
                                 [else 
                                  (io-error 'read id bytes
-                                   (make-i/o-write-error))])))])
+                                   (make-i/o-read-error))])))])
                   refill)
                 #f ;;; write!
                 #f ;;; get-position
diff --git a/scheme/last-revision b/scheme/last-revision
index 96764d9..34f46ed 100644
--- a/scheme/last-revision
+++ b/scheme/last-revision
@@ -1 +1 @@
-1502
+1504