diff --git a/src/base/blob.hpp b/src/base/blob.hpp
index 9feaec77..53622685 100644
--- a/src/base/blob.hpp
+++ b/src/base/blob.hpp
@@ -66,7 +66,7 @@ namespace sgns::base {
         std::string out_str;
         char        temp_buf[3];
 
-        for ( auto it : this )
+        for ( auto it = this->begin(); it != this->end(); ++it )
         {
             snprintf( temp_buf, sizeof( temp_buf ), "%02x", *it );
             out_str.append( temp_buf, sizeof( temp_buf ) - 1 );