diff --git a/src/C4Include.h b/src/C4Include.h
index d7c799daf..a616b39d2 100644
--- a/src/C4Include.h
+++ b/src/C4Include.h
@@ -66,23 +66,6 @@ don't need to include this file or any of the files it includes. */
 #include <regex>
 namespace re = std;
 
-// debug memory management - must come after standard headers,
-// because those libraries use placement new
-#ifndef NODEBUGMEM
-#if defined(_DEBUG) && defined(_MSC_VER)
-#define _CRTDBG_MAP_ALLOC
-#include <stdlib.h>
-#include <crtdbg.h>
-inline void *operator new(size_t s, const char *szFile, long iLine)
-{ return ::operator new(s, _NORMAL_BLOCK, szFile, iLine); }
-inline void operator delete(void *p, const char *, long)
-{ ::operator delete(p); }
-#define new_orig new
-#define new new(__FILE__, __LINE__)
-#endif
-#endif
-#include <new>
-
 #include "lib/Standard.h"
 #include "C4Prototypes.h"
 #include "lib/C4Real.h"
diff --git a/src/landscape/C4Particles.h b/src/landscape/C4Particles.h
index c2efa7b4e..ddbc0aa74 100644
--- a/src/landscape/C4Particles.h
+++ b/src/landscape/C4Particles.h
@@ -18,10 +18,7 @@
 
 #include "platform/StdScheduler.h"
 
-#pragma push_macro("new")
-#undef new
 #include <pcg/pcg_random.hpp>
-#pragma pop_macro("new")
 
 #ifndef INC_C4Particles
 #define INC_C4Particles
diff --git a/src/lib/C4Random.cpp b/src/lib/C4Random.cpp
index ee67aa253..54f89f0de 100644
--- a/src/lib/C4Random.cpp
+++ b/src/lib/C4Random.cpp
@@ -23,10 +23,7 @@
 
 #include <random>
 
-#pragma push_macro("new")
-#undef new
 #include <pcg/pcg_random.hpp>
-#pragma pop_macro("new")
 
 int RandomCount = 0;
 
diff --git a/src/lib/Standard.h b/src/lib/Standard.h
index 9b4acf7e7..01e533988 100644
--- a/src/lib/Standard.h
+++ b/src/lib/Standard.h
@@ -21,8 +21,6 @@
 #define INC_STANDARD
 
 #include <type_traits>
-#pragma push_macro("new")
-#undef new
 
 // The Clear/Default functions that exist on most OpenClonk classes are A
 // BAD IDEA because the caller has no guarantee that every member has been
@@ -39,7 +37,6 @@ inline InplaceReconstruct(T *obj)
 	obj->~T();
 	new (obj) T();
 }
-#pragma pop_macro("new")
 
 #include "platform/PlatformAbstraction.h"