diff --git a/cmake/xo_macros/xo_cxx.cmake b/cmake/xo_macros/xo_cxx.cmake
index 169941c7..06e5e8c3 100644
--- a/cmake/xo_macros/xo_cxx.cmake
+++ b/cmake/xo_macros/xo_cxx.cmake
@@ -186,12 +186,14 @@ macro(xo_toplevel_asan_config2)
 endmacro()
 
 # support for
+#   cmake -DCMAKE_BUILD_TYPE=
 #   cmake -DCMAKE_BUILD_TYPE=release
 #   cmake -DCMAKE_BUILD_TYPE=debug
-#   cmake -DCMAKE_BUILD_TYPE+asan
+#   cmake -DCMAKE_BUILD_TYPE=asan
 #   cmake -DCMAKE_BUILD_TYPE=coverage
 #
 macro(xo_toplevel_config2)
+    xo_toplevel_default_config2()
     xo_toplevel_release_config2()
     xo_toplevel_debug_config2()
     xo_toplevel_asan_config2()