diff --git a/openrct2.vcxproj b/openrct2.vcxproj
index 5f2f90147a..1ca09d060e 100644
--- a/openrct2.vcxproj
+++ b/openrct2.vcxproj
@@ -494,7 +494,7 @@
       <WarningLevel>Level3</WarningLevel>
       <Optimization>Disabled</Optimization>
       <SDLCheck>true</SDLCheck>
-      <PreprocessorDefinitions>$(OpenRCT2_DEFINES);DEBUG;_CRT_SECURE_NO_WARNINGS;_USE_MATH_DEFINES;CURL_STATICLIB;SDL_MAIN_HANDLED;_WINSOCK_DEPRECATED_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>$(OpenRCT2_DEFINES);DEBUG;OPENGL_NO_LINK;_CRT_SECURE_NO_WARNINGS;_USE_MATH_DEFINES;CURL_STATICLIB;SDL_MAIN_HANDLED;_WINSOCK_DEPRECATED_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <ObjectFileName>$(IntDir)\%(RelativeDir)</ObjectFileName>
@@ -521,7 +521,7 @@
       <TreatSpecificWarningsAsErrors>4013</TreatSpecificWarningsAsErrors>
       <OmitFramePointers />
       <BufferSecurityCheck>false</BufferSecurityCheck>
-      <PreprocessorDefinitions>$(OpenRCT2_DEFINES);_CRT_SECURE_NO_WARNINGS;_USE_MATH_DEFINES;CURL_STATICLIB;SDL_MAIN_HANDLED;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>$(OpenRCT2_DEFINES);OPENGL_NO_LINK;_CRT_SECURE_NO_WARNINGS;_USE_MATH_DEFINES;CURL_STATICLIB;SDL_MAIN_HANDLED;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ObjectFileName>$(IntDir)\%(RelativeDir)</ObjectFileName>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
diff --git a/src/drawing/engines/OpenGLAPI.cpp b/src/drawing/engines/OpenGLAPI.cpp
index 9c45d2a32b..9be06343ce 100644
--- a/src/drawing/engines/OpenGLAPI.cpp
+++ b/src/drawing/engines/OpenGLAPI.cpp
@@ -16,12 +16,10 @@
 
 #ifndef DISABLE_OPENGL
 
-#include <SDL_platform.h>
-
 #define NO_EXTERN_GLAPI
 #include "OpenGLAPI.h"
 
-#if __WINDOWS__
+#if OPENGL_NO_LINK
 
 #include <SDL_video.h>
 
@@ -81,11 +79,11 @@ static const char * TryLoadAllProcAddresses()
     return nullptr;
 }
 
-#endif /* __WINDOWS__ */
+#endif /* #if OPENGL_NO_LINK */
 
 bool OpenGLAPI::Initialise()
 {
-#if __WINDOWS__
+#ifdef OPENGL_NO_LINK
     const char * failedProcName = TryLoadAllProcAddresses();
     if (failedProcName != nullptr)
     {
diff --git a/src/drawing/engines/OpenGLAPI.h b/src/drawing/engines/OpenGLAPI.h
index a11fb3aa44..30191c7400 100644
--- a/src/drawing/engines/OpenGLAPI.h
+++ b/src/drawing/engines/OpenGLAPI.h
@@ -16,6 +16,8 @@
 
 #pragma once
 
+#if OPENGL_NO_LINK
+
 // BEGIN [Do not define 1.1 function signatures]
 #define glBegin             __static__glBegin
 #define glBindTexture       __static__glBindTexture
@@ -40,8 +42,12 @@
 #define glVertex2i          __static__glVertex2i
 #define glViewport          __static__glViewport
 
+#endif
+
 #include <SDL_opengl.h>
 
+#if OPENGL_NO_LINK
+
 // END [Do not define 1.1 function signatures]
 #undef glBegin
 #undef glBindTexture
@@ -90,12 +96,12 @@ typedef void (APIENTRYP PFNGLTRANSLATEFPROC    )(GLfloat x, GLfloat y, GLfloat z
 typedef void (APIENTRYP PFNGLVERTEX2IPROC      )(GLint x, GLint y);
 typedef void (APIENTRYP PFNGLVIEWPORTPROC      )(GLint x, GLint y, GLsizei width, GLsizei height);
 
-#if __WINDOWS__
-
 #ifdef NO_EXTERN_GLAPI
+    // Defines the function pointers
     #define GLAPI_DECL
     #define GLAPI_SET   = nullptr
 #else
+    // Defines the functions as "extern"
     #define GLAPI_DECL  extern
     #define GLAPI_SET
 #endif
@@ -128,7 +134,7 @@ GLAPI_DECL PFNGLVIEWPORTPROC        glViewport          GLAPI_SET;
 GLAPI_DECL PFNGLCREATESHADERPROC    glCreateShader      GLAPI_SET;
 GLAPI_DECL PFNGLDELETESHADERPROC    glDeleteShader      GLAPI_SET;
 
-#endif /* __WINDOWS__ */
+#endif /* OPENGL_NO_LINK */
 
 namespace OpenGLAPI
 {