diff --git a/include/etl/platform.h b/include/etl/platform.h
index 1456b0f3..d37f1959 100644
--- a/include/etl/platform.h
+++ b/include/etl/platform.h
@@ -211,13 +211,8 @@ SOFTWARE.
   #define ETL_CONSTINIT
 #endif
 
-#if !defined(ETL_USING_INITIALIZER_LIST)
-  #if ETL_CPP11_SUPPORTED && ETL_USING_STL && ETL_NOT_USING_STLPORT
-    #define ETL_USING_INITIALIZER_LIST 1
-  #else
-    #define ETL_USING_INITIALIZER_LIST 0
-  #endif
-#endif
+// Check for availability of certain builtins
+#include "profiles/determine_builtin_support.h"
 
 // Check for availability of certain builtins
 #include "profiles/determine_builtin_support.h"
diff --git a/test/vs2019/etl.vcxproj.filters b/test/vs2019/etl.vcxproj.filters
index ab977681..14355af7 100644
--- a/test/vs2019/etl.vcxproj.filters
+++ b/test/vs2019/etl.vcxproj.filters
@@ -1161,6 +1161,9 @@
     <ClInclude Include="..\..\include\etl\multi_span.h">
       <Filter>ETL\Containers</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\etl\profiles\determine_builtin_support.h">
+      <Filter>ETL\Profiles</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\etl\nth_type.h">
       <Filter>ETL\Utilities</Filter>
     </ClInclude>