1 files changed, 1 insertions, 0 deletions

diff --git a/pnm.scm b/pnm.scm
index f4daeb7..5ccf8c5 100644
--- a/pnm.scm
+++ b/pnm.scm
@@ -28,6 +28,7 @@
           image-ref
           image-set!
           image-read
+          pnm-parse-error?
           image-write)
   (import (scheme base)
           (pnm image)