diff --git a/spikes/make/makefile b/spikes/make/Makefile
similarity index 100%
rename from spikes/make/makefile
rename to spikes/make/Makefile
diff --git a/spikes/variadic_macros/makefile b/spikes/variadic_macros/Makefile
similarity index 100%
rename from spikes/variadic_macros/makefile
rename to spikes/variadic_macros/Makefile