diff --git a/sys/include/net/gnrc/ipv6/nib/conf.h b/sys/include/net/gnrc/ipv6/nib/conf.h
index ae6251aa24dc8a0c590c2609d3ec7a9eea03bf51..7a0078736612109e1f63fc24e5863d13b2ef7d5e 100644
--- a/sys/include/net/gnrc/ipv6/nib/conf.h
+++ b/sys/include/net/gnrc/ipv6/nib/conf.h
@@ -30,6 +30,9 @@ extern "C" {
 #ifndef GNRC_IPV6_NIB_CONF_6LBR
 #define GNRC_IPV6_NIB_CONF_6LBR         (1)
 #endif
+#ifndef GNRC_IPV6_NIB_CONF_SLAAC
+#define GNRC_IPV6_NIB_CONF_SLAAC        (1)
+#endif
 #ifndef GNRC_IPV6_NIB_NUMOF
 #define GNRC_IPV6_NIB_NUMOF             (16)
 #endif