diff --git a/Sources/FoundationEssentials/CMakeLists.txt b/Sources/FoundationEssentials/CMakeLists.txt
index afdbdd507..8c2101d59 100644
--- a/Sources/FoundationEssentials/CMakeLists.txt
+++ b/Sources/FoundationEssentials/CMakeLists.txt
@@ -99,7 +99,7 @@ if(NOT BUILD_SHARED_LIBS)
     target_compile_options(FoundationEssentials PRIVATE
         "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -public-autolink-library -Xfrontend $<$<PLATFORM_ID:Windows>:${CMAKE_STATIC_LIBRARY_PREFIX_Swift}>_FoundationCollections>")
     target_compile_options(FoundationEssentials PRIVATE
-        "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -public-autolink-library -Xfrontend swiftSynchronization>")
+        "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -public-autolink-library -Xfrontend $<$<PLATFORM_ID:Windows>:${CMAKE_STATIC_LIBRARY_PREFIX_Swift}>swiftSynchronization>")
 endif()
 
 set_target_properties(FoundationEssentials PROPERTIES
diff --git a/Sources/FoundationInternationalization/CMakeLists.txt b/Sources/FoundationInternationalization/CMakeLists.txt
index 6cf0629ef..7edec0fb4 100644
--- a/Sources/FoundationInternationalization/CMakeLists.txt
+++ b/Sources/FoundationInternationalization/CMakeLists.txt
@@ -49,7 +49,7 @@ if(NOT BUILD_SHARED_LIBS)
     target_compile_options(FoundationInternationalization PRIVATE
         "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -public-autolink-library -Xfrontend _FoundationICU>")
     target_compile_options(FoundationEssentials PRIVATE
-        "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -public-autolink-library -Xfrontend swiftSynchronization>")
+        "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -public-autolink-library -Xfrontend $<$<PLATFORM_ID:Windows>:${CMAKE_STATIC_LIBRARY_PREFIX_Swift}>swiftSynchronization>")
 endif()
 
 set_target_properties(FoundationInternationalization PROPERTIES