diff --git a/1.0.0.rc16/lib/activate/activate.c b/1.0.0.rc16/lib/activate/activate.c
index 1d71ea8c0a..0a4ec6afa1 100644
--- a/1.0.0.rc16/lib/activate/activate.c
+++ b/1.0.0.rc16/lib/activate/activate.c
@@ -866,7 +866,7 @@

 #define LIB_NAME_LENGTH 255
 static int
-do_device(struct lib_context *lc, struct raid_set *rs, int (*f) ())
+do_device(struct lib_context *lc, struct raid_set *rs, int (*f)(char *, char *))
 {
        int ret = 0;
        char lib_name[LIB_NAME_LENGTH];
diff --git a/1.0.0.rc16/lib/misc/file.c b/1.0.0.rc16/lib/misc/file.c
index fe74d5c9c2..c060b6e712 100644
--- a/1.0.0.rc16/lib/misc/file.c
+++ b/1.0.0.rc16/lib/misc/file.c
@@ -59,12 +59,12 @@
 	int fd, ret = 0;
 	loff_t o;
 	struct {
-		ssize_t(*func) ();
+		ssize_t(*func)(int, void *, size_t);
 		const char *what;
 	} rw_spec[] = {
 		{
 		read, "read"}, {
-	write, "writ"},}, *rw = rw_spec + ((flags & O_WRONLY) ? 1 : 0);
+	(ssize_t(*)(int, void *, size_t))write, "writ"},}, *rw = rw_spec + ((flags & O_WRONLY) ? 1 : 0);
 
 	if ((fd = open(path, flags, lc->mode)) == -1)
 		LOG_ERR(lc, 0, "opening \"%s\"", path);