diff --git a/c/lib/Makefile.am b/c/lib/Makefile.am
index 8e41e08b8..e5f46147d 100644
--- a/c/lib/Makefile.am
+++ b/c/lib/Makefile.am
@@ -4,6 +4,7 @@ libmlr_la_SOURCES=	free_flags.h \
 			aux_entries.h \
 			minunit.h \
 			mlr_arch.c \
+			mlr_arch.h \
 			mlr_globals.c \
 			mlr_globals.h \
 			mlrdatetime.c \
diff --git a/c/todo.txt b/c/todo.txt
index ce722b5a4..f4db7ae16 100644
--- a/c/todo.txt
+++ b/c/todo.txt
@@ -1,6 +1,7 @@
 ================================================================
 BUGFIXES
 
+* xtab.wtf
 ? tsv->json blank line -- ? needs repro.
 
 ================================================================