1 files changed, 2 insertions, 2 deletions
diff --git a/dev.h b/dev.h
index 48c6b9a..686dec8 100644
--- a/dev.h
+++ b/dev.h
@@ -1,7 +1,7 @@
 struct devsw {
   int (*d_open)(char *, int);
-  int (*d_read)(int, void *, int);
-  int (*d_write)(int, void *, int);
+  int (*d_read)(int, char *, int);
+  int (*d_write)(int, char *, int);
   int (*d_close)(int);
 };