diff --git a/CI/before_script.msvc.sh b/CI/before_script.msvc.sh
index 5aea6e04cb..2e96528a94 100644
--- a/CI/before_script.msvc.sh
+++ b/CI/before_script.msvc.sh
@@ -419,8 +419,8 @@ fi
 			printf "Exists. "
 		elif [ -z $SKIP_EXTRACT ]; then
 			rm -rf Boost
-			"${DEPS}/boost-1.67.0-msvc${MSVC_YEAR}-win${BITS}.exe" //DIR="${SYSTEMDRIVE}\boost" //VERYSILENT //NORESTART //SUPPRESSMSGBOXES //LOG="boost_install.log"			
-			mv "${SYSTEMDRIVE}\boost" ${BOOST_SDK}
+			"${DEPS}/boost-1.67.0-msvc${MSVC_YEAR}-win${BITS}.exe" //DIR="${TMP}\boost" //VERYSILENT //NORESTART //SUPPRESSMSGBOXES //LOG="boost_install.log"			
+			mv "${TMP}\boost" ${BOOST_SDK}
 		fi
 
 		add_cmake_opts -DBOOST_ROOT="$BOOST_SDK" \