diff --git a/src/windows/system.c b/src/windows/system.c
index 0dbd92c27..43a7d8842 100644
--- a/src/windows/system.c
+++ b/src/windows/system.c
@@ -39,7 +39,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #if defined(_WIN32)
 #include <knownfolders.h>
-#include <Shlobj.h>
+#include <shlobj.h>
 #endif
 
 HINSTANCE                       hGlobalInstance;