diff --git a/pitfall/pitfall/image.rkt b/pitfall/pitfall/image.rkt
index 856addbb..91d0a823 100644
--- a/pitfall/pitfall/image.rkt
+++ b/pitfall/pitfall/image.rkt
@@ -22,7 +22,7 @@
                  [else (open-input-file src)]))
   (cond
     [(equal? (peek-bytes 2 0 data) (bytes #xff #xd8))
-     (make-object JPEG (port->bytes data) label)]
+     (make-object JPEG data label)]
     [(equal? (peek-bytes 4 0 data) (apply bytes (cons #x89 (map char->integer '(#\P #\N #\G)))))
      (make-object PNG data label)]
     [else (raise-argument-error 'PDFImage-open "valid image format" src)]))
diff --git a/pitfall/pitfall/jpeg.rkt b/pitfall/pitfall/jpeg.rkt
index ab5f2ddd..45c74cf5 100644
--- a/pitfall/pitfall/jpeg.rkt
+++ b/pitfall/pitfall/jpeg.rkt
@@ -8,9 +8,7 @@
 
 (define-subclass object% (JPEG data [label #f])
   (define last-ip (current-input-port))
-  (current-input-port (if (input-port? data)
-                          data
-                          (open-input-bytes data)))
+  (current-input-port (if (input-port? data) data (open-input-bytes data)))
   (unless (equal? (read-16bit-integer) #xffd8)
     (error 'JPEG "Start of Input marker byte not found"))
 
@@ -66,6 +64,7 @@
     (when (equal? (· this colorSpace) "DeviceCMYK")
       (hash-set! (· this obj payload) 'Decode '(1.0 0.0 1.0 0.0 1.0 0.0 1.0 0.0)))
 
+    (port-position (· this data) 0)
     (send (· this obj) end (· this data))))
 
 (module+ test
diff --git a/pitfall/ptest/alltest.rkt b/pitfall/ptest/alltest.rkt
index dfaa38c2..3f736dd4 100644
--- a/pitfall/ptest/alltest.rkt
+++ b/pitfall/ptest/alltest.rkt
@@ -1,11 +1,9 @@
 #lang racket
-(module+ test
+(for ([i (in-range 20)])
+  (define which (string->symbol (format "ptest/test~a" i)))
+  (println which)
+  (dynamic-require which #f))
 
-  (for ([i (in-range 20)])
-       (define which (string->symbol (format "ptest/test~a" i)))
-       (println which)
-       (dynamic-require which #f))
-
-  (require
-    pitfall/page-test
-    (submod pitfall/zlib test)))
\ No newline at end of file
+(require
+  pitfall/page-test
+  (submod pitfall/zlib test))
\ No newline at end of file