diff --git a/cmake/modules/SwiftSource.cmake b/cmake/modules/SwiftSource.cmake
index e20e62862b5aa..9439d7b3c539d 100644
--- a/cmake/modules/SwiftSource.cmake
+++ b/cmake/modules/SwiftSource.cmake
@@ -241,7 +241,7 @@ function(_compile_swift_files
     list(APPEND swift_flags "-Xfrontend" "-assume-single-threaded")
   endif()
 
-  if(SWIFT_STDLIB_ENABLE_SIL_OWNERSHIP AND SWIFTFILE_IS_STDLIB)
+  if(SWIFTFILE_IS_STDLIB)
     list(APPEND swift_flags "-Xfrontend" "-enable-sil-ownership")
   endif()
 
diff --git a/stdlib/public/core/CMakeLists.txt b/stdlib/public/core/CMakeLists.txt
index 035381d0fa4ab..8bf683c7fe35c 100644
--- a/stdlib/public/core/CMakeLists.txt
+++ b/stdlib/public/core/CMakeLists.txt
@@ -258,7 +258,6 @@ endif()
 
 list(APPEND swift_stdlib_compile_flags "-Xllvm" "-sil-inline-generics")
 list(APPEND swift_stdlib_compile_flags "-Xllvm" "-sil-partial-specialization")
-list(APPEND swift_stdlib_compile_flags "-Xfrontend" "-enable-sil-ownership")
 if(SWIFT_STDLIB_ENABLE_STDLIBCORE_EXCLUSIVITY_CHECKING)
   list(APPEND swift_stdlib_compile_flags "-enforce-exclusivity=checked")
 endif()