diff --git a/src/Checkpoint.h b/src/Checkpoint.h
index f82f7e4..f387da5 100644
--- a/src/Checkpoint.h
+++ b/src/Checkpoint.h
@@ -64,6 +64,6 @@ struct std::hash<Checkpoint>
 {
   std::size_t operator()(const Checkpoint&checkpoint)const
   {
-	return std::hash<int_fast64_t>()((((int_fast64_t)(*(int_fast32_t*)(&checkpoint.pos.x))<<32)|*(int_fast32_t*)(&checkpoint.pos.y)));
+	return (int_fast64_t)(*(int_fast32_t*)(&checkpoint.pos.x))<<32|*(int_fast32_t*)(&checkpoint.pos.y);
   }
 };
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