diff --git a/Sources/Plasma/FeatureLib/pfGameMgr/Pch.h b/Sources/Plasma/FeatureLib/pfGameMgr/Pch.h
index 5e8c793b..756f731a 100644
--- a/Sources/Plasma/FeatureLib/pfGameMgr/Pch.h
+++ b/Sources/Plasma/FeatureLib/pfGameMgr/Pch.h
@@ -70,4 +70,8 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include "pfGameMgr.h"
 #include "Intern.h"
 
+#ifdef HS_BUILD_FOR_OSX
+#include <malloc/malloc.h>
+#else
 #include <malloc.h>
+#endif
diff --git a/Sources/Plasma/NucleusLib/pnAsyncCoreExe/Pch.h b/Sources/Plasma/NucleusLib/pnAsyncCoreExe/Pch.h
index 3c633fea..26c414dd 100644
--- a/Sources/Plasma/NucleusLib/pnAsyncCoreExe/Pch.h
+++ b/Sources/Plasma/NucleusLib/pnAsyncCoreExe/Pch.h
@@ -61,4 +61,9 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include "Private/Unix/pnAceUx.h"
 
 #include <process.h>
+
+#ifdef HS_BUILD_FOR_OSX
+#include <malloc/malloc.h>
+#else
 #include <malloc.h>
+#endif
diff --git a/Sources/Plasma/NucleusLib/pnNetCli/Pch.h b/Sources/Plasma/NucleusLib/pnNetCli/Pch.h
index 704e6a6c..c021151e 100644
--- a/Sources/Plasma/NucleusLib/pnNetCli/Pch.h
+++ b/Sources/Plasma/NucleusLib/pnNetCli/Pch.h
@@ -59,4 +59,8 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include "pnNetCli.h"
 #include "Intern.h"
 
+#ifdef HS_BUILD_FOR_OSX
+#include <malloc/malloc.h>
+#else
 #include <malloc.h>
+#endif
diff --git a/Sources/Plasma/NucleusLib/pnNetProtocol/Pch.h b/Sources/Plasma/NucleusLib/pnNetProtocol/Pch.h
index 62e7d06f..394706a1 100644
--- a/Sources/Plasma/NucleusLib/pnNetProtocol/Pch.h
+++ b/Sources/Plasma/NucleusLib/pnNetProtocol/Pch.h
@@ -64,5 +64,8 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include "Private/pnNpAllIncludes.h"
 #include "Intern.h"
 
-
+#ifdef HS_BUILD_FOR_OSX
+#include <malloc/malloc.h>
+#else
 #include <malloc.h>
+#endif
diff --git a/Sources/Plasma/NucleusLib/pnUtils/Pch.h b/Sources/Plasma/NucleusLib/pnUtils/Pch.h
index 9923b637..f23899f0 100644
--- a/Sources/Plasma/NucleusLib/pnUtils/Pch.h
+++ b/Sources/Plasma/NucleusLib/pnUtils/Pch.h
@@ -51,7 +51,11 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include "pnUtCoreLib.h"    // must be first in list
 #include "pnUtPragma.h"
 
+#ifdef HS_BUILD_FOR_OSX
+#include <malloc/malloc.h>
+#else
 #include <malloc.h>
+#endif
 
 #ifdef HS_BUILD_FOR_WIN32
 #pragma warning(push, 3)
diff --git a/Sources/Plasma/PubUtilLib/plNetClientComm/plNetClientComm.cpp b/Sources/Plasma/PubUtilLib/plNetClientComm/plNetClientComm.cpp
index 9ae3b9c4..68744567 100644
--- a/Sources/Plasma/PubUtilLib/plNetClientComm/plNetClientComm.cpp
+++ b/Sources/Plasma/PubUtilLib/plNetClientComm/plNetClientComm.cpp
@@ -66,7 +66,11 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 
 #include "hsResMgr.h"
 
+#ifdef HS_BUILD_FOR_OSX
+#include <malloc/malloc.h>
+#else
 #include <malloc.h>
+#endif
 
 extern  bool    gDataServerLocal;
 
diff --git a/Sources/Plasma/PubUtilLib/plNetGameLib/Pch.h b/Sources/Plasma/PubUtilLib/plNetGameLib/Pch.h
index 0e4e0e90..a4027425 100644
--- a/Sources/Plasma/PubUtilLib/plNetGameLib/Pch.h
+++ b/Sources/Plasma/PubUtilLib/plNetGameLib/Pch.h
@@ -69,4 +69,8 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include "Private/plNglAllIncludes.h"
 #include "Intern.h"
 
+#ifdef HS_BUILD_FOR_OSX
+#include <malloc/malloc.h>
+#else
 #include <malloc.h>
+#endif
diff --git a/Sources/Plasma/PubUtilLib/plVault/Pch.h b/Sources/Plasma/PubUtilLib/plVault/Pch.h
index 338d5508..e5435cdb 100644
--- a/Sources/Plasma/PubUtilLib/plVault/Pch.h
+++ b/Sources/Plasma/PubUtilLib/plVault/Pch.h
@@ -93,4 +93,8 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 
 #include "Intern.h"
 
+#ifdef HS_BUILD_FOR_OSX
+#include <malloc/malloc.h>
+#else
 #include <malloc.h>
+#endif