diff --git a/typefactory/typefactory.h b/typefactory/typefactory.h
index c79b9c4..acd90b0 100644
--- a/typefactory/typefactory.h
+++ b/typefactory/typefactory.h
@@ -1,6 +1,6 @@
 #ifndef TYPEFACTORY_H
 #define TYPEFACTORY_H
-#include <map>
+#include <unordered_map>
 #include <memory>
 
 /**
@@ -94,7 +94,7 @@ class TypeFsactory {
     /**
      * @brief classes - main storage for pointers to constructors of registered types
      */
-    std::map<ClassId_T, typefactoryFunction> classes;
+    std::unordered_map<ClassId_T, typefactoryFunction> classes;
 
   private:
     /**