diff --git a/CMakeLists_mingw.txt b/CMakeLists_mingw.txt
index f633585f43..90b0b04bf4 100644
--- a/CMakeLists_mingw.txt
+++ b/CMakeLists_mingw.txt
@@ -6,6 +6,7 @@ SET(CMAKE_CXX_COMPILER ${COMPILER_PREFIX}-c++)
 SET(CMAKE_RC_COMPILER ${COMPILER_PREFIX}-windres)
 SET(CMAKE_PKGCONFIG_EXECUTABLE ${COMPILER_PREFIX}-pkg-config)
 SET(PKG_CONFIG_EXECUTABLE ${COMPILER_PREFIX}-pkg-config)
+SET(CMAKE_SYSTEM_PROCESSOR x86)
 
 if(APPLE)
      SET(TARGET_ENVIRONMENT /usr/local/mingw-w32-bin_i686-darwin/i686-w64-mingw32)