1 files changed, 2 insertions, 2 deletions

diff --git a/include/libbb.h b/include/libbb.h
index ff223dd0f..d57f00e0e 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -390,8 +390,8 @@ const char *bb_basename(const char *name) FAST_FUNC;
 char *last_char_is(const char *s, int c) FAST_FUNC;
 const char* endofname(const char *name) FAST_FUNC;
 
-void ndelay_on(int fd) FAST_FUNC;
-void ndelay_off(int fd) FAST_FUNC;
+int ndelay_on(int fd) FAST_FUNC;
+int ndelay_off(int fd) FAST_FUNC;
 void close_on_exec_on(int fd) FAST_FUNC;
 void xdup2(int, int) FAST_FUNC;
 void xmove_fd(int, int) FAST_FUNC;