diff --git a/sys/auto_init/auto_init.c b/sys/auto_init/auto_init.c
index df52d0c97a..eb1afef579 100644
--- a/sys/auto_init/auto_init.c
+++ b/sys/auto_init/auto_init.c
@@ -144,6 +144,8 @@ void auto_init_net_if(void)
 
         memcpy(&(eui64.uint32[0]), &hash_h, sizeof(uint32_t));
         memcpy(&(eui64.uint32[1]), &hash_l, sizeof(uint32_t));
+        /* Set Local/Universal bit to Local since this EUI64 is made up. */
+        eui64.uint8[0] |= 0x02;
         net_if_set_eui64(iface, &eui64);
 
 #if ENABLE_DEBUG