diff --git a/src/fccache.c b/src/fccache.c
index 3352a66..ac46ee8 100644
--- a/src/fccache.c
+++ b/src/fccache.c
@@ -976,7 +976,7 @@
     {
 #if defined(HAVE_MMAP) || defined(__CYGWIN__)
 	cache = mmap (0, fd_stat->st_size, PROT_READ, MAP_SHARED, fd, 0);
-#if (HAVE_POSIX_FADVISE) && defined(POSIX_FADV_WILLNEED)
+#if defined(HAVE_POSIX_FADVISE) && defined(POSIX_FADV_WILLNEED)
 	posix_fadvise (fd, 0, fd_stat->st_size, POSIX_FADV_WILLNEED);
 #endif
 	if (cache == MAP_FAILED)