diff --git a/intern/ghost/intern/GHOST_SystemWin32.cpp b/intern/ghost/intern/GHOST_SystemWin32.cpp
index f884b0fadb1..60e7815ccbb 100644
--- a/intern/ghost/intern/GHOST_SystemWin32.cpp
+++ b/intern/ghost/intern/GHOST_SystemWin32.cpp
@@ -41,7 +41,7 @@
 
 #include <shlobj.h>
 #include <tlhelp32.h>
-#include <Psapi.h>
+#include <psapi.h>
 #include <windowsx.h>
 
 #include "utfconv.h"
diff --git a/source/blender/blenlib/intern/system.c b/source/blender/blenlib/intern/system.c
index 898075e651e..863622f2546 100644
--- a/source/blender/blenlib/intern/system.c
+++ b/source/blender/blenlib/intern/system.c
@@ -35,7 +35,7 @@
 #  include <execinfo.h>
 #elif defined(WIN32)
 #  include <windows.h>
-#  include <DbgHelp.h>
+#  include <dbghelp.h>
 #endif
 
 int BLI_cpu_support_sse2(void)