diff --git a/Source/Core/Common/CMakeLists.txt b/Source/Core/Common/CMakeLists.txt
index 3ede46e870..e7cc3d88d8 100644
--- a/Source/Core/Common/CMakeLists.txt
+++ b/Source/Core/Common/CMakeLists.txt
@@ -287,7 +287,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
 endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
-  target_sources(common PUBLIC HRWrap.h HRWrap.cpp)
+  target_sources(common PRIVATE HRWrap.h HRWrap.cpp)
 endif()
 
 if(USE_UPNP)