diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index 4bdeec4..fe90b29 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -69,6 +69,10 @@
         "WindowsUtils.h"
         "windows_with_undefs.h"
     )
+elseif(APPLE)
+    target_sources(dawn_common PRIVATE
+        "SystemUtils_mac.mm"
+    )
 endif()
 
 target_link_libraries(dawn_common PUBLIC dawncpp_headers PRIVATE dawn_internal_config)