diff --git a/Svc/PosixTime/CMakeLists.txt b/Svc/PosixTime/CMakeLists.txt
index 9f83e7a2b2..a2103272b5 100644
--- a/Svc/PosixTime/CMakeLists.txt
+++ b/Svc/PosixTime/CMakeLists.txt
@@ -6,7 +6,7 @@
 #
 # Note: using PROJECT_NAME as EXECUTABLE_NAME
 ####
-#restrict_platforms(Posix)
+restrict_platforms(Posix)
 
 set(SOURCE_FILES
   "${CMAKE_CURRENT_LIST_DIR}/PosixTime.fpp"