diff --git a/lib/roken/Makefile.am b/lib/roken/Makefile.am
index 1080b3adb..629440e2a 100644
--- a/lib/roken/Makefile.am
+++ b/lib/roken/Makefile.am
@@ -17,6 +17,7 @@ libroken_la_SOURCES =		\
 	concat.c		\
 	emalloc.c		\
 	erealloc.c		\
+	estrdup.c		\
 	get_window_size.c	\
 	getarg.c		\
 	inaddr2str.c		\
diff --git a/lib/roken/Makefile.in b/lib/roken/Makefile.in
index ac9dd89fa..f76f224d4 100644
--- a/lib/roken/Makefile.in
+++ b/lib/roken/Makefile.in
@@ -42,6 +42,7 @@ SOURCES = \
 	daemon.c \
 	emalloc.c \
 	erealloc.c \
+	estrdup.c \
 	err.c \
 	errx.c \
 	fchown.c \
@@ -113,6 +114,7 @@ OBJECTS = \
 	concat.o \
 	emalloc.o \
 	erealloc.o \
+	estrdup.o \
 	get_window_size.o \
 	getarg.o \
 	inaddr2str.o \