diff --git a/src/worker-privs.c b/src/worker-privs.c
index f7a70253..99833e03 100644
--- a/src/worker-privs.c
+++ b/src/worker-privs.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Nikos Mavrogiannopoulos
+ * Copyright (C) 2013-2019 Nikos Mavrogiannopoulos
  *
  * This file is part of ocserv.
  *
@@ -31,6 +31,15 @@
 #include <sys/ioctl.h>
 #include <errno.h>
 
+/* libseccomp 2.4.2 broke accidentally the API. Work around it. */
+#ifndef __SNR_ppoll
+# ifdef __NR_ppoll
+#  define __SNR_ppoll			__NR_ppoll
+# else
+#  define __SNR_ppoll			__PNR_ppoll
+# endif
+#endif
+
 int disable_system_calls(struct worker_st *ws)
 {
 	int ret;