diff --git a/Util/StdHashExtensions.h b/Util/std_hash.hpp
similarity index 96%
rename from Util/StdHashExtensions.h
rename to Util/std_hash.hpp
index 0d310d3c3..59c4ad9b4 100644
--- a/Util/StdHashExtensions.h
+++ b/Util/std_hash.hpp
@@ -25,8 +25,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 */
 
-#ifndef STD_HASH_EXTENSIONS_H
-#define STD_HASH_EXTENSIONS_H
+#ifndef STD_HASH_HPP
+#define STD_HASH_HPP
 
 #include <functional>
 
@@ -74,4 +74,4 @@ template <typename T1, typename T2> struct hash<std::pair<T1, T2>>
 };
 }
 
-#endif // STD_HASH_EXTENSIONS_H
+#endif // STD_HASH_HPP
diff --git a/algorithms/tiny_components.hpp b/algorithms/tiny_components.hpp
index d54165ce0..71336bf45 100644
--- a/algorithms/tiny_components.hpp
+++ b/algorithms/tiny_components.hpp
@@ -40,7 +40,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "../Util/integer_range.hpp"
 #include "../Util/OSRMException.h"
 #include "../Util/simple_logger.hpp"
-#include "../Util/StdHashExtensions.h"
+#include "../Util/std_hash.hpp"
 #include "../Util/timing_util.hpp"
 
 #include <osrm/Coordinate.h>
diff --git a/data_structures/restriction_map.hpp b/data_structures/restriction_map.hpp
index 6f72105ef..17dad317c 100644
--- a/data_structures/restriction_map.hpp
+++ b/data_structures/restriction_map.hpp
@@ -32,7 +32,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "node_based_graph.hpp"
 #include "restriction.hpp"
-#include "../Util/StdHashExtensions.h"
+#include "../Util/std_hash.hpp"
 #include "../typedefs.h"
 
 #include <unordered_map>