diff --git a/source/sys.c b/source/sys.c
index 6282a78..cdf3d51 100644
--- a/source/sys.c
+++ b/source/sys.c
@@ -30,7 +30,9 @@
 #endif
 #include <errno.h>
 #include <stdarg.h>
-#include <sys/time.h>
+#ifdef HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <fcntl.h>