diff --git a/docker/x86_64/mingw64 b/docker/x86_64/mingw64
index f4481acd..50eddf8f 100644
--- a/docker/x86_64/mingw64
+++ b/docker/x86_64/mingw64
@@ -604,6 +604,7 @@ RUN if [ -f "/3rd_party/SFML-${MY_SFML_VERSION}.tar.gz" ]; then \
         -DBUILD_STATIC_LIBS=ON \
         -DCMAKE_CXX_STANDARD=${MY_CXX_STANDARD} \
         -DCMAKE_INSTALL_PREFIX=${MY_MINGW_DIR} \
+        -DCMAKE_SYSTEM_PROCESSOR=AMD64 \
         -DCMAKE_TOOLCHAIN_FILE=${MY_TOOLCHAIN_FILE_CMAKE} \
       && make -j${MY_NUM_JOBS} \
       && make install \