diff --git a/src/rdb.c b/src/rdb.c
index e4ebf37dab6e2e7f148ba4156a7e7545f8e080c5..b19dbf1d7ae17ecfa7801c7498046277e27892e5 100644
--- a/src/rdb.c
+++ b/src/rdb.c
@@ -687,7 +687,7 @@ int rdbSave(char *filename) {
      * loading code skips the check in this case. */
     cksum = rdb.cksum;
     memrev64ifbe(&cksum);
-    rioWrite(&rdb,&cksum,8);
+    if (rioWrite(&rdb,&cksum,8) == 0) goto werr;
 
     /* Make sure data will not remain on the OS's output buffers */
     if (fflush(fp) == EOF) goto werr;