diff --git a/src/lwip/efr32/lwipopts-rs911x.h b/src/lwip/efr32/lwipopts-rs911x.h
index c866909e8d5a71..5f84181387a69f 100644
--- a/src/lwip/efr32/lwipopts-rs911x.h
+++ b/src/lwip/efr32/lwipopts-rs911x.h
@@ -101,7 +101,6 @@
 #define LWIP_IPV6_AUTOCONFIG (1)
 #define LWIP_IPV6_ROUTER_SUPPORT 1
 #define LWIP_ND6_LISTEN_RA 1
-#define LWIP_IPV6_MLD 1
 
 #define LWIP_ND6_NUM_NEIGHBORS (2)
 #define LWIP_ND6_NUM_DESTINATIONS (3)
@@ -151,7 +150,9 @@
 
 #define LWIP_IPV6_NUM_ADDRESSES 5
 
+#ifndef LWIP_IPV6_ND
 #define LWIP_IPV6_ND 1
+#endif
 #define LWIP_ND6_QUEUEING 1
 #define LWIP_NUM_ND6_QUEUE 3