diff --git a/fio.h b/fio.h
index 2d30324..5fad446 100644
--- a/fio.h
+++ b/fio.h
@@ -18,7 +18,9 @@
 #include "arch.h"
 #include "os.h"
 
+#ifdef FIO_HAVE_SYSLET
 #include "syslet.h"
+#endif
 
 enum fio_ddir {
 	DDIR_READ = 0,