diff --git a/lib/json/Makefile.am b/lib/json/Makefile.am
index 6c8c0ce..3c7aa8f 100644
--- a/lib/json/Makefile.am
+++ b/lib/json/Makefile.am
@@ -28,6 +28,9 @@
 dist-hook:
 	$(RM) -r $(distdir)/test/build/
 
+distdir:
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
 EXTRA_DIST = \
     schema.json \
     test