1 files changed, 3 insertions, 0 deletions
diff --git a/refclock_pps.c b/refclock_pps.c
index 85ff9e9..b9e8009 100644
--- a/refclock_pps.c
+++ b/refclock_pps.c
@@ -48,12 +48,15 @@ struct pps_instance {
 };
 
 static int pps_initialise(RCL_Instance instance) {
+  const char *options[] = {"clear", NULL};
   pps_handle_t handle;
   pps_params_t params;
   struct pps_instance *pps;
   int fd, edge_clear, mode;
   char *path;
 
+  RCL_CheckDriverOptions(instance, options);
+
   path = RCL_GetDriverParameter(instance);
   edge_clear = RCL_GetDriverOption(instance, "clear") ? 1 : 0;