--- a/ntpclient.c
+++ b/ntpclient.c
@@ -43,6 +43,9 @@
#include <errno.h>
#ifdef PRECISION_SIOCGSTAMP
#include <sys/ioctl.h>
+#ifdef __GLIBC__
+#include <linux/sockios.h>
+#endif
#endif
#ifdef USE_OBSOLETE_GETTIMEOFDAY
#include <sys/time.h>