diff --git a/Code/GamePhysics/GamePhysics.vcxproj b/Code/GamePhysics/GamePhysics.vcxproj
index 43da0eb2..03af535d 100644
--- a/Code/GamePhysics/GamePhysics.vcxproj
+++ b/Code/GamePhysics/GamePhysics.vcxproj
@@ -90,7 +90,7 @@
       <WarningLevel>Level3</WarningLevel>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>$(SolutionDir)Misc;$(SolutionDir)OysterMath;$(SolutionDir)OysterPhysics3D;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_WINDLL;DLL_EXPORT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_WINDLL;PHYSICS_DLL_EXPORT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -101,7 +101,7 @@
       <WarningLevel>Level3</WarningLevel>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>$(SolutionDir)Misc;$(SolutionDir)OysterMath;$(SolutionDir)OysterPhysics3D;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_WINDLL;DLL_EXPORT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_WINDLL;PHYSICS_DLL_EXPORT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -114,7 +114,7 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <AdditionalIncludeDirectories>$(SolutionDir)Misc;$(SolutionDir)OysterMath;$(SolutionDir)OysterPhysics3D;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_WINDLL;DLL_EXPORT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_WINDLL;PHYSICS_DLL_EXPORT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -129,7 +129,7 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <AdditionalIncludeDirectories>$(SolutionDir)Misc;$(SolutionDir)OysterMath;$(SolutionDir)OysterPhysics3D;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_WINDLL;DLL_EXPORT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_WINDLL;PHYSICS_DLL_EXPORT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
diff --git a/Code/GamePhysics/Implementation/PhysicsAPI_Impl.cpp b/Code/GamePhysics/Implementation/PhysicsAPI_Impl.cpp
index 9072aa81..52339f37 100644
--- a/Code/GamePhysics/Implementation/PhysicsAPI_Impl.cpp
+++ b/Code/GamePhysics/Implementation/PhysicsAPI_Impl.cpp
@@ -9,32 +9,32 @@ using namespace ::Utility::DynamicMemory;
 
 API_Impl instance;  
 
-::Oyster::Math::Float4x4 & __stdcall MomentOfInertia::CreateSphereMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float radius)
+::Oyster::Math::Float4x4 & MomentOfInertia::CreateSphereMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float radius)
 {
 	return ::Oyster::Physics3D::Formula::MomentOfInertia::Sphere(mass, radius);
 }
 
-::Oyster::Math::Float4x4 & __stdcall MomentOfInertia::CreateHollowSphereMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float radius)
+::Oyster::Math::Float4x4 & MomentOfInertia::CreateHollowSphereMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float radius)
 {
 	return ::Oyster::Physics3D::Formula::MomentOfInertia::HollowSphere(mass, radius);
 }
 
-::Oyster::Math::Float4x4 & __stdcall MomentOfInertia::CreateCuboidMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float height, const ::Oyster::Math::Float width, const ::Oyster::Math::Float depth )
+::Oyster::Math::Float4x4 & MomentOfInertia::CreateCuboidMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float height, const ::Oyster::Math::Float width, const ::Oyster::Math::Float depth )
 {
 	return ::Oyster::Physics3D::Formula::MomentOfInertia::Cuboid(mass, height, width, depth);
 }
 
-::Oyster::Math::Float4x4 & __stdcall MomentOfInertia::CreateCylinderMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float height, const ::Oyster::Math::Float radius )
+::Oyster::Math::Float4x4 & MomentOfInertia::CreateCylinderMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float height, const ::Oyster::Math::Float radius )
 {
 	return ::Oyster::Physics3D::Formula::MomentOfInertia::Cylinder(mass, height, radius);
 }
 
-::Oyster::Math::Float4x4 & __stdcall MomentOfInertia::CreateRodMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float length )
+::Oyster::Math::Float4x4 & MomentOfInertia::CreateRodMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float length )
 {
 	return ::Oyster::Physics3D::Formula::MomentOfInertia::RodCenter(mass, length);
 }
 
-API & __stdcall API::Instance()
+API & API::Instance()
 {
 	return instance;
 }
diff --git a/Code/GamePhysics/PhysicsAPI.h b/Code/GamePhysics/PhysicsAPI.h
index e722ff0d..7b2a57ac 100644
--- a/Code/GamePhysics/PhysicsAPI.h
+++ b/Code/GamePhysics/PhysicsAPI.h
@@ -4,10 +4,10 @@
 #include "OysterCollision3D.h"
 #include "OysterMath.h"
 
-#if defined DLL_EXPORT
-	#define DLL_USAGE __declspec(dllexport)
+#if defined PHYSICS_DLL_EXPORT
+	#define PHYSICS_DLL_USAGE __declspec(dllexport)
 #else
-	#define DLL_USAGE __declspec(dllimport)
+	#define PHYSICS_DLL_USAGE __declspec(dllimport)
 #endif
 
 namespace Oyster
@@ -28,28 +28,28 @@ namespace Oyster
 			const float gravity_constant = (const float)6.67284e-11; //!< The _big_G_! ( N(m/kg)^2 ) Used in real gravityforcefields.
 		}
 
-		class DLL_USAGE MomentOfInertia
+		class PHYSICS_DLL_USAGE MomentOfInertia
 		{
 		public:
-			static ::Oyster::Math::Float4x4 & __stdcall CreateSphereMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float radius);
+			static ::Oyster::Math::Float4x4 & CreateSphereMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float radius);
 				
-			static ::Oyster::Math::Float4x4 & __stdcall CreateHollowSphereMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float radius);
+			static ::Oyster::Math::Float4x4 & CreateHollowSphereMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float radius);
 
-			static ::Oyster::Math::Float4x4 & __stdcall CreateCuboidMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float height, const ::Oyster::Math::Float width, const ::Oyster::Math::Float depth );
+			static ::Oyster::Math::Float4x4 & CreateCuboidMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float height, const ::Oyster::Math::Float width, const ::Oyster::Math::Float depth );
 
-			static ::Oyster::Math::Float4x4 & __stdcall CreateCylinderMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float height, const ::Oyster::Math::Float radius );
+			static ::Oyster::Math::Float4x4 & CreateCylinderMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float height, const ::Oyster::Math::Float radius );
 	
-			static ::Oyster::Math::Float4x4 & __stdcall CreateRodMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float length );
+			static ::Oyster::Math::Float4x4 & CreateRodMatrix( const ::Oyster::Math::Float mass, const ::Oyster::Math::Float length );
 		};
 
-		class DLL_USAGE API
+		class PHYSICS_DLL_USAGE API
 		{
 		public:
 			typedef void (*EventAction_Collision)( unsigned int, unsigned int );
 			typedef void (*EventAction_Destruction)( unsigned int, ::Utility::DynamicMemory::UniquePointer<ICustomBody> );
 
 			/** Gets the Physics instance. */
-			static API & __stdcall Instance();
+			static API & Instance();
 
 			/********************************************************
 			 * Sets the time length of each physics update frame.
@@ -207,7 +207,7 @@ namespace Oyster
 		};
 	
 		//! documentation in progress
-		class DLL_USAGE ICustomBody
+		class PHYSICS_DLL_USAGE ICustomBody
 		{
 		public:
 			virtual ~ICustomBody() {};