diff --git a/Makefile.am b/Makefile.am
index e458a11d..adf4d94c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -594,6 +594,7 @@ coverage-clean:
 EXTRA_DIST += \
 	doc/meson.build \
 	subprojects/libnkutils/meson.build \
+	subprojects/libnkutils/meson_options.txt \
 	subprojects/libgwater/xcb/meson.build \
 	meson_options.txt \
 	meson.build