diff --git a/GNUmakefile b/GNUmakefile
index 17eac077..9ac65d17 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -1,5 +1,7 @@
 # 16 october 2015
 
+# TODO warn on MinGW-w64 builds that lack of isolation awareness means no theming
+
 # silence entering/leaving messages
 MAKEFLAGS += --no-print-directory
 
diff --git a/GNUmakefile.msvc b/GNUmakefile.msvc
index 5691e6e9..33c7b111 100644
--- a/GNUmakefile.msvc
+++ b/GNUmakefile.msvc
@@ -1,5 +1,7 @@
 # 16 october 2015
 
+# TODO merge into the main makefile
+
 # TODO silence compiler non-diagnostics (/nologo is not enough)
 
 OBJDIR = .obj