diff --git a/mshow.c b/mshow.c
index 1a98801..b5cf64f 100644
--- a/mshow.c
+++ b/mshow.c
@@ -383,6 +383,7 @@ list_mime(int depth, struct message *msg, char *body, size_t bodylen)
 	print_filename(filename);
 	printf("\n");
 
+	free(mt);
 	return MIME_CONTINUE;
 }