diff --git a/include/transport/MySQLBackend.h b/include/transport/MySQLBackend.h
index 22c2100fb9d92edd7894a28a80b5057208323c3c..944299b3bbf1ec4d43baed4859a2836a1d7f5149 100644
--- a/include/transport/MySQLBackend.h
+++ b/include/transport/MySQLBackend.h
@@ -129,7 +129,7 @@ class MySQLBackend : public StorageBackend
 				std::vector<MYSQL_BIND> m_params;
 				std::vector<MYSQL_BIND> m_results;
 				int m_error;
-				unsigned m_resultOffset;
+				int m_resultOffset;
 				unsigned m_offset;
 				std::string m_string;
 		};