diff --git a/src/liblwevent/400_signalfd.h b/src/liblwevent/400_signalfd.h
index 4793c75..c32d35f 100644
--- a/src/liblwevent/400_signalfd.h
+++ b/src/liblwevent/400_signalfd.h
@@ -57,7 +57,7 @@ struct signalfd_siginfo {
 
 \param fd File descriptor to modify (pass -1 to create a new file descriptor).
 \param mask Signal mask. Any signals set in \a mask will be delivered through \a fd (but see below).
-\retval 0 on success.
+\returns File descriptor.
 \retval -1 on error (and see \a errno).
 
 System call wrapper function for \c signalfd(2). Any signals turned on in \a mask will be delivered