diff --git a/lib/services/block/index.js b/lib/services/block/index.js
index 25b31987..72f9ed25 100644
--- a/lib/services/block/index.js
+++ b/lib/services/block/index.js
@@ -181,10 +181,12 @@ BlockService.prototype.getRawBlock = function(hash, callback) {
     if(err) {
       return callback(err);
     }
-    if (!block) {
+    let block_raw = block.toRaw();
+     let block_raw_str_hex = block_raw.toString('hex');
+    if (!block || typeof block_raw == "undefined" || typeof block_raw_str_hex == "undefined" || block_raw_str_hex == '') {
       return callback();
     }
-    log.info("Testing getRawBlock " + block.toRaw().toString('hex'));
+    log.info("Testing getRawBlock " + block_raw_str_hex);
     callback(null, block.toRaw().toString('hex'));
   });
 };