diff --git a/mime.lisp b/mime.lisp
index d24bf5a..e2e7576 100644
--- a/mime.lisp
+++ b/mime.lisp
@@ -52,7 +52,9 @@
((not (symbolp sym)))
((mime-type-p sym) (setf mime-type sym))
(mime-type (let ((ext (ext sym)))
- (format t "~S ~S~%" ext mime-type)
+ (when (debug-p :mime)
+ (format t "~S ~S~%" ext mime-type)
+ (force-output))
(setf (mime-type ext)
mime-type)))))))
(cl:close in))))