diff --git a/CMakeLists_mingw.txt b/CMakeLists_mingw.txt
index df0bbfacd1..7fb25965c1 100644
--- a/CMakeLists_mingw.txt
+++ b/CMakeLists_mingw.txt
@@ -17,9 +17,9 @@ else()
 endif (APPLE)
 
 # potential flags to make code more similar to MSVC:
-#   -fshort-wchar -fshort-enums -mms-bitfields -fpack-struct=1
+#   -fshort-wchar -fshort-enums -mms-bitfields
 #
-set(CMAKE_C_FLAGS "-masm=intel -std=gnu99" CACHE STRING "" FORCE)
+set(CMAKE_C_FLAGS "-masm=intel -std=gnu99 -fpack-struct=2" CACHE STRING "" FORCE)
 set(CMAKE_SHARED_LINKER_FLAGS "-static-libgcc" CACHE STRING "" FORCE)
 
 include_directories("/usr/include/wine/windows/")