diff --git a/ui/drivers/win32/ui_win32_window.cpp b/ui/drivers/win32/ui_win32_window.cpp
index f868344fed..8a2c4243f5 100644
--- a/ui/drivers/win32/ui_win32_window.cpp
+++ b/ui/drivers/win32/ui_win32_window.cpp
@@ -75,7 +75,10 @@ static void ui_window_win32_set_title(void *data, char *buf)
    SetWindowText(window->hwnd, buf);
 }
 
-extern "C" VOID (WINAPI *DragAcceptFiles_func)(HWND, BOOL);
+extern "C"
+{
+   VOID (WINAPI *DragAcceptFiles_func)(HWND, BOOL);
+}
 
 void ui_window_win32_set_droppable(void *data, bool droppable)
 {