diff --git a/include/picobench/picobench.hpp b/include/picobench/picobench.hpp
index 0adaa5c..f88a706 100644
--- a/include/picobench/picobench.hpp
+++ b/include/picobench/picobench.hpp
@@ -113,7 +113,8 @@
 // for the benchmark. You can have initialization/deinitialization code outside
 // of the loop and it won't be measured.
 //
-#pragma once
+#if !defined(PICOBENCH_HPP_INCLUDED)
+#define PICOBENCH_HPP_INCLUDED
 
 #include <cstdint>
 #include <chrono>
@@ -353,6 +354,8 @@ class global_registry
 #   define PICOBENCH_IMPLEMENT_MAIN
 #endif
 
+#endif // PICOBENCH_HPP_INCLUDED
+
 #if defined(PICOBENCH_IMPLEMENT)
 
 #include <random>
diff --git a/test/multi_cpp/main.cpp b/test/multi_cpp/main.cpp
index 095e966..615190a 100644
--- a/test/multi_cpp/main.cpp
+++ b/test/multi_cpp/main.cpp
@@ -1,7 +1,6 @@
 #include <doctest/doctest.h>
 
 #define PICOBENCH_IMPLEMENT
-#define PICOBENCH_DONT_BIND_TO_ONE_CORE
 #include "picobench_configured.hpp"
 
 #include <string>