diff --git a/src/cluster.c b/src/cluster.c
index aad7adaec8e9adb8dfd22e6528b4bc0e075b87ee..cad91314fcd81118e5427a674cd602ecbd1bce59 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -350,8 +350,6 @@ clusterNode *createClusterNode(char *nodename, int flags) {
     node->slaveof = NULL;
     node->ping_sent = node->pong_received = 0;
     node->fail_time = 0;
-    node->configdigest = NULL;
-    node->configdigest_ts = 0;
     node->link = NULL;
     memset(node->ip,0,sizeof(node->ip));
     node->port = 0;
@@ -1171,7 +1169,6 @@ void clusterBuildMessageHdr(clusterMsg *hdr, int type) {
     hdr->port = htons(server.port);
     hdr->flags = htons(server.cluster->myself->flags);
     hdr->state = server.cluster->state;
-    memset(hdr->configdigest,0,32); /* FIXME: set config digest */
 
     if (type == CLUSTERMSG_TYPE_FAIL) {
         totlen = sizeof(clusterMsg)-sizeof(union clusterMsgData);
diff --git a/src/redis.h b/src/redis.h
index 254ef37126f48a6f7eadf4f8678a587545dd0139..54286990cf04d9de9e63ab2168225a726e49b6d0 100644
--- a/src/redis.h
+++ b/src/redis.h
@@ -572,8 +572,6 @@ struct clusterNode {
     time_t ping_sent;       /* Unix time we sent latest ping */
     time_t pong_received;   /* Unix time we received the pong */
     time_t fail_time;       /* Unix time when FAIL flag was set */
-    char *configdigest;         /* Configuration digest of this node */
-    time_t configdigest_ts;     /* Configuration digest timestamp */
     char ip[16];                /* Latest known IP address of this node */
     int port;                   /* Latest known port of this node */
     clusterLink *link;          /* TCP/IP link with this node */
@@ -657,11 +655,11 @@ typedef struct {
     char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
     unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
     char slaveof[REDIS_CLUSTER_NAMELEN];
-    char configdigest[32];
+    char notused1[32];  /* 32 bytes reserved for future usage. */
     uint16_t port;      /* Sender TCP base port */
     uint16_t flags;     /* Sender node flags */
     unsigned char state; /* Cluster state from the POV of the sender */
-    unsigned char notused[3]; /* Reserved for future use. For alignment. */
+    unsigned char notused2[3]; /* Reserved for future use. For alignment. */
     union clusterMsgData data;
 } clusterMsg;