diff --git a/mio/lib/Makefile.am b/mio/lib/Makefile.am
index 5f26c50..4bb5f09 100644
--- a/mio/lib/Makefile.am
+++ b/mio/lib/Makefile.am
@@ -71,6 +71,8 @@ libmio_la_SOURCES = \
 	sys-mux.c \
 	sys-prv.h \
 	sys-tim.c \
+	uch-case.h \
+	uch-prop.h \
 	tmr.c \
 	utf8.c \
 	utl.c
diff --git a/mio/lib/Makefile.in b/mio/lib/Makefile.in
index d3aa6f8..9324577 100644
--- a/mio/lib/Makefile.in
+++ b/mio/lib/Makefile.in
@@ -457,6 +457,8 @@ libmio_la_SOURCES = \
 	sys-mux.c \
 	sys-prv.h \
 	sys-tim.c \
+	uch-case.h \
+	uch-prop.h \
 	tmr.c \
 	utf8.c \
 	utl.c