diff --git a/FindMyxNotificationsThirdparty.cmake b/FindMyxNotificationsThirdparty.cmake
index 56f936b..729240a 100644
--- a/FindMyxNotificationsThirdparty.cmake
+++ b/FindMyxNotificationsThirdparty.cmake
@@ -6,13 +6,15 @@ list(APPEND _ext_project_args
   myx-notifications
   SOURCE_DIR       ${CMAKE_SOURCE_DIR}/thirdparty/myx-notifications
   INSTALL_DIR      ${CMAKE_BINARY_DIR}
-  BUILD_BYPRODUCTS ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/libmyx-notifications.a
   CMAKE_ARGS       ${CMLIB_EXT_PROJ_DEFAULT_ARGS}
                    <SOURCE_DIR>)
 if(MyxNotificationsThirdparty_FIND_COMPONENTS STREQUAL "headers")
   list(APPEND _ext_project_args
     BUILD_COMMAND     true
     INSTALL_COMMAND   ${CMAKE_MAKE_PROGRAM} myx-notifications-install-headers)
+else()
+  list(APPEND _ext_project_args
+    BUILD_BYPRODUCTS ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/libmyx-notifications.a)
 endif()
 ExternalProject_Add(${_ext_project_args})
 unset(_ext_project_args)
diff --git a/FindMyxlibThirdparty.cmake b/FindMyxlibThirdparty.cmake
index 581628f..6c9866c 100644
--- a/FindMyxlibThirdparty.cmake
+++ b/FindMyxlibThirdparty.cmake
@@ -6,14 +6,16 @@ list(APPEND _ext_project_args
   myxlib
   SOURCE_DIR       ${CMAKE_SOURCE_DIR}/thirdparty/myxlib
   INSTALL_DIR      ${CMAKE_BINARY_DIR}
-  BUILD_BYPRODUCTS ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/libmyx-qt.a
-                   ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/libmyx-filesystem.a
   CMAKE_ARGS       ${CMLIB_EXT_PROJ_DEFAULT_ARGS}
                    <SOURCE_DIR>)
 if(MyxlibThirdparty_FIND_COMPONENTS STREQUAL "headers")
   list(APPEND _ext_project_args
     BUILD_COMMAND     true
     INSTALL_COMMAND   ${CMAKE_MAKE_PROGRAM} myxlib-install-headers)
+else()
+  list(APPEND _ext_project_args
+    BUILD_BYPRODUCTS ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/libmyx-qt.a
+                     ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/libmyx-filesystem.a)
 endif()
 ExternalProject_Add(${_ext_project_args})
 unset(_ext_project_args)