diff --git a/libtransmission/fdlimit.c b/libtransmission/fdlimit.c
index b0ca542ae..8fbe1f97f 100644
--- a/libtransmission/fdlimit.c
+++ b/libtransmission/fdlimit.c
@@ -243,7 +243,11 @@ void
 tr_close_file( int fd )
 {
 #if defined(HAVE_POSIX_FADVISE)
+    const int err = errno;
+    /* Set hint about not caching this file.
+       It's okay for this to fail silently, so don't let it affect errno */
     posix_fadvise( fd, 0, 0, POSIX_FADV_DONTNEED );
+    errno = err;
 #endif
     close( fd );
 }