diff --git a/include/types/fd.h b/include/types/fd.h
index 057d968..8299a02 100644
--- a/include/types/fd.h
+++ b/include/types/fd.h
@@ -78,7 +78,7 @@
 
 /* info about one given fd */
 struct fdtab {
-	int (*iocb)(int fd);                 /* I/O handler, returns FD_WAIT_* */
+	void (*iocb)(int fd);                /* I/O handler */
 	void *owner;                         /* the connection or listener associated with this fd, NULL if closed */
 	unsigned int  cache;                 /* position+1 in the FD cache. 0=not in cache. */
 	unsigned char state;                 /* FD state for read and write directions (2*3 bits) */