diff --git a/cmake/DownloadBoost.cmake b/cmake/DownloadBoost.cmake
index 7c52d05488e5146ff9faded74dc0ed6356f2efb8..a5c76383e9e652ca8667dbe9241d410aaf8a2fb3 100644
--- a/cmake/DownloadBoost.cmake
+++ b/cmake/DownloadBoost.cmake
@@ -76,7 +76,7 @@ if(NOT WIN32)
 endif()
 
 EXECUTE_PROCESS(
-    COMMAND ${B2_CMD} -q ${PIC_CODE} ${BOOST_TOOLSET} --layout=system variant=${VARIANT} link=${DEPENDENCIES_LINK_TYPE} address-model=64 architecture=x86--with-system --with-serialization --with-random
+    COMMAND ${B2_CMD} -q ${PIC_CODE} ${BOOST_TOOLSET} --layout=system variant=${VARIANT} link=${DEPENDENCIES_LINK_TYPE} address-model=64 architecture=x86 --with-system --with-serialization --with-random
     WORKING_DIRECTORY ${BOOST_LOCAL_PATH}
     RESULT_VARIABLE rv
 )