diff --git a/core/net/mac/contikimac.c b/core/net/mac/contikimac.c
index 7e4c3deb5..e4d45e34c 100644
--- a/core/net/mac/contikimac.c
+++ b/core/net/mac/contikimac.c
@@ -232,6 +232,10 @@ static struct compower_activity current_packet;
 
 #include "net/mac/phase.h"
 
+#ifdef CONTIKIMAC_CONF_MAX_PHASE_NEIGHBORS
+#define MAX_PHASE_NEIGHBORS CONTIKIMAC_CONF_MAX_PHASE_NEIGHBORS
+#endif
+
 #ifndef MAX_PHASE_NEIGHBORS
 #define MAX_PHASE_NEIGHBORS 30
 #endif