diff --git a/src/libslic3r/CMakeLists.txt b/src/libslic3r/CMakeLists.txt
index 2e7680bef..838af44fb 100644
--- a/src/libslic3r/CMakeLists.txt
+++ b/src/libslic3r/CMakeLists.txt
@@ -390,6 +390,8 @@ if(SLIC3R_PROFILE)
 endif()
 
 if (APPLE)
+    # This flag prevents the need for minimum SDK version 10.14
+    # currently, PS targets v10.10
     target_compile_options(libslic3r PUBLIC "-fno-aligned-allocation")
 endif ()