diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64550687..4981c98a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -595,7 +595,11 @@ endforeach()
 if(WIN32)
   target_sources(lovr PRIVATE src/core/os_win32.c)
   target_sources(lovr PRIVATE src/resources/lovr.rc)
-  set_target_properties(lovr PROPERTIES COMPILE_FLAGS "/wd4244 /MP")
+  if (MSVC)
+    set_target_properties(lovr PROPERTIES COMPILE_FLAGS "/wd4244 /MP")
+  else()
+    set_target_properties(lovr PROPERTIES COMPILE_FLAGS "-MP")
+  endif()
   set_target_properties(lovr PROPERTIES LINK_FLAGS_DEBUG "/SUBSYSTEM:console /ENTRY:WinMainCRTStartup")
   set_target_properties(lovr PROPERTIES LINK_FLAGS_RELEASE "/SUBSYSTEM:windows /ENTRY:WinMainCRTStartup")
   target_compile_definitions(lovr PRIVATE _CRT_SECURE_NO_WARNINGS)
diff --git a/src/core/os_win32.c b/src/core/os_win32.c
index ee96dfdd..867d4bd5 100644
--- a/src/core/os_win32.c
+++ b/src/core/os_win32.c
@@ -2,8 +2,8 @@
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <shellapi.h>
-#include <KnownFolders.h>
-#include <ShlObj.h>
+#include <knownfolders.h>
+#include <shlobj.h>
 #include <stdio.h>
 
 #include "os_glfw.h"