diff --git a/src/rdb.c b/src/rdb.c
index 3f1e22520..3667f279e 100644
--- a/src/rdb.c
+++ b/src/rdb.c
@@ -717,7 +717,7 @@ robj *rdbLoadObject(int rdbtype, rio *rdb) {
     size_t len;
     unsigned int i;
 
-    redisLog(REDIS_DEBUG,"LOADING OBJECT %d (at %d)\n",rdbtype,rdbTell(rdb));
+    redisLog(REDIS_DEBUG,"LOADING OBJECT %d (at %d)\n",rdbtype,rioTell(rdb));
     if (rdbtype == REDIS_RDB_TYPE_STRING) {
         /* Read string value */
         if ((o = rdbLoadEncodedStringObject(rdb)) == NULL) return NULL;
@@ -1039,7 +1039,7 @@ int rdbLoad(char *filename) {
 
         /* Serve the clients from time to time */
         if (!(loops++ % 1000)) {
-            loadingProgress(rdbTell(&rdb));
+            loadingProgress(rioTell(&rdb));
             aeProcessEvents(server.el, AE_FILE_EVENTS|AE_DONT_WAIT);
         }
 
diff --git a/src/rio.c b/src/rio.c
index bb977c740..44165d715 100644
--- a/src/rio.c
+++ b/src/rio.c
@@ -18,6 +18,8 @@
 #include "rio.h"
 #include "util.h"
 
+uint64_t crc64(uint64_t crc, const unsigned char *s, uint64_t l);
+
 /* Returns 1 or 0 for success/failure. */
 static size_t rioBufferWrite(rio *r, const void *buf, size_t len) {
     r->io.buffer.ptr = sdscatlen(r->io.buffer.ptr,(char*)buf,len);
@@ -86,7 +88,7 @@ void rioInitWithBuffer(rio *r, sds s) {
 /* This function can be installed both in memory and file streams when checksum
  * computation is needed. */
 void rioGenericUpdateChecksum(rio *r, const void *buf, size_t len) {
-    r->checksum = crc64(r->checksum,buf,len);
+    r->cksum = crc64(r->cksum,buf,len);
 }
 
 /* ------------------------------ Higher level interface ---------------------------
diff --git a/src/rio.h b/src/rio.h
index 31746303c..9012856ff 100644
--- a/src/rio.h
+++ b/src/rio.h
@@ -16,7 +16,7 @@ struct _rio {
      * data that was read or written so far. The method should be designed so that
      * can be called with the current checksum, and the buf and len fields pointing
      * to the new block of data to add to the checksum computation. */
-    void (*update_cksum)(struct _rio *, void *buf, size_t len);
+    void (*update_cksum)(struct _rio *, const void *buf, size_t len);
 
     /* The current checksum */
     uint64_t cksum;
@@ -40,13 +40,13 @@ typedef struct _rio rio;
  * if needed. */
 
 inline size_t rioWrite(rio *r, const void *buf, size_t len) {
-    if (r->udpate_cksum) r->update_cksum(r,buf,len);
+    if (r->update_cksum) r->update_cksum(r,buf,len);
     return r->write(r,buf,len);
 }
 
 inline size_t rioRead(rio *r, void *buf, size_t len) {
     if (r->read(r,buf,len) == 1) {
-        if (r->udpate_cksum) r->update_cksum(r,buf,len);
+        if (r->update_cksum) r->update_cksum(r,buf,len);
         return 1;
     }
     return 0;