diff --git a/CMakeLists.txt b/CMakeLists.txt
index b4b984ab..23b253d9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -117,8 +117,8 @@ endif()
 set_property(GLOBAL APPEND PROPERTY XCTest_EXPORTS XCTest)
 get_swift_host_arch(swift_arch)
 install(TARGETS XCTest
-  ARCHIVE DESTINATION lib/swift$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:_static>/$<LOWER_CASE:${CMAKE_SYSTEM_NAME}>
-  LIBRARY DESTINATION lib/swift$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:_static>/$<LOWER_CASE:${CMAKE_SYSTEM_NAME}>
+  ARCHIVE DESTINATION lib/swift$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:_static>/$<LOWER_CASE:${CMAKE_SYSTEM_NAME}>/${swift_arch}
+  LIBRARY DESTINATION lib/swift$<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:_static>/$<LOWER_CASE:${CMAKE_SYSTEM_NAME}>/${swift_arch}
   RUNTIME DESTINATION bin)
 install(FILES
   ${CMAKE_CURRENT_BINARY_DIR}/swift/XCTest.swiftdoc