diff --git a/bin/ikarus b/bin/ikarus
index 4f08424..b642a97 100755
Binary files a/bin/ikarus and b/bin/ikarus differ
diff --git a/bin/ikarus-runtime.c b/bin/ikarus-runtime.c
index 13e00b0..1c3b0c6 100644
--- a/bin/ikarus-runtime.c
+++ b/bin/ikarus-runtime.c
@@ -753,26 +753,6 @@ ikrt_set_code_reloc_vector(ikp code, ikp vec, ikpcb* pcb){
   return void_object;
 }
 
-ikp
-ikrt_strftime(ikp outstr, ikp fmtstr){
-  time_t t;
-  struct tm* tmp;
-  t = time(NULL);
-  tmp = localtime(&t);
-  if(tmp == NULL){
-    fprintf(stderr, "Error in time: %s\n", strerror(errno));
-  }
-  int rv = 
-    strftime((char*)outstr+off_string_data,
-             unfix(ref(outstr, off_string_length)) + 1,
-             (char*)fmtstr+off_string_data,
-             tmp);
-  if(rv == 0){
-    fprintf(stderr, "Error in strftime: %s\n", strerror(errno));
-  }
-  return fix(rv);
-}
-
 ikp
 ikrt_bvftime(ikp outbv, ikp fmtbv){
   time_t t;
diff --git a/src/ikarus.boot b/src/ikarus.boot
index 4f17c54..5f01e0b 100644
Binary files a/src/ikarus.boot and b/src/ikarus.boot differ
diff --git a/src/ikarus.date-string.ss b/src/ikarus.date-string.ss
index f0cdd64..d7602eb 100644
--- a/src/ikarus.date-string.ss
+++ b/src/ikarus.date-string.ss
@@ -4,6 +4,7 @@
   (import (except (ikarus) date-string))
   (define date-string
     (lambda ()
-      (let ([s (make-string 10)])
-        (foreign-call "ikrt_strftime" s "%F")
-        s))))
+      (let ([s (make-bytevector 10)])
+        (foreign-call "ikrt_bvftime" s 
+          (string->utf8-bytevector "%F"))
+        (utf8-bytevector->string s)))))
diff --git a/src/ikarus.transcoders.ss b/src/ikarus.transcoders.ss
index c7db14d..2a6cc0f 100644
--- a/src/ikarus.transcoders.ss
+++ b/src/ikarus.transcoders.ss
@@ -201,7 +201,7 @@
                     [(eq? mode 'replace) 
                      ($string-set! str n ($fixnum->char #xFFFD))
                      (f str x ($fxadd1 i) j ($fxadd1 n) mode)]
-                    [else (error who "BUG: incomplete char sequence")])]
+                    [else (error who "BUG")])]
                  [($fx= ($fxsra b0 3) #b11110)
                   (cond
                     [($fx< ($fx+ i 3) j) 
@@ -236,7 +236,7 @@
       (define (convert bv mode)
         (fill ($make-string (count bv mode)) bv mode))
       (case-lambda
-        [(bv) (convert bv 'error)]
+        [(bv) (convert bv 'raise)]
         [(bv handling-mode)
          (unless (memq handling-mode '(ignore replace raise)) 
            (error 'utf8-bytevector->string
@@ -245,7 +245,3 @@
          (convert bv handling-mode)])))
 
   )
-
-
-#!eof
-