diff --git a/iocore/cache/Cache.cc b/iocore/cache/Cache.cc
index 22b502aac89..ca5fcc60966 100644
--- a/iocore/cache/Cache.cc
+++ b/iocore/cache/Cache.cc
@@ -3089,6 +3089,7 @@ register_cache_stats(RecRawStatBlock *rsb, const char *prefix)
   REG_INT("read.success", cache_read_success_stat);
   REG_INT("read.failure", cache_read_failure_stat);
   REG_INT("read.seek.failure", cache_read_seek_fail_stat);
+  REG_INT("read.invalid", cache_read_invalid_stat);
   REG_INT("write.active", cache_write_active_stat);
   REG_INT("write.success", cache_write_success_stat);
   REG_INT("write.failure", cache_write_failure_stat);
diff --git a/iocore/cache/CacheRead.cc b/iocore/cache/CacheRead.cc
index 4c33cdf5d26..9d9f2452b26 100644
--- a/iocore/cache/CacheRead.cc
+++ b/iocore/cache/CacheRead.cc
@@ -1175,6 +1175,20 @@ CacheVC::openReadStartHead(int event, Event *e)
       } else {
         f.single_fragment = false;
       }
+
+      // Now that we have selected an alternate, validate that the content length and object size match
+      MIMEField *field = alternate.response_get()->field_find(MIME_FIELD_CONTENT_LENGTH, MIME_LEN_CONTENT_LENGTH);
+      if (field) {
+        uint64_t cl = static_cast<uint64_t>(field->value_get_int64());
+        if (cl != doc_len) {
+          Warning("OpenReadHead failed for cachekey %X : alternate content length doesn't match doc_len %ld != %ld", key.slice32(0),
+                  cl, doc_len);
+          CACHE_INCREMENT_DYN_STAT(cache_read_invalid_stat);
+          err = ECACHE_BAD_META_DATA;
+          goto Ldone;
+        }
+      }
+
     } else {
       next_CacheKey(&key, &doc->key);
       f.single_fragment = doc->single_fragment();
diff --git a/iocore/cache/P_CacheInternal.h b/iocore/cache/P_CacheInternal.h
index cf747de60cf..2d7a8cb8432 100644
--- a/iocore/cache/P_CacheInternal.h
+++ b/iocore/cache/P_CacheInternal.h
@@ -114,6 +114,7 @@ enum {
   cache_read_success_stat,
   cache_read_failure_stat,
   cache_read_seek_fail_stat,
+  cache_read_invalid_stat,
   cache_write_active_stat,
   cache_write_success_stat,
   cache_write_failure_stat,