diff --git a/test/php/Makefile.am b/test/php/Makefile.am
index b1ac686..1cffdd4 100644
--- a/test/php/Makefile.am
+++ b/test/php/Makefile.am
@@ -37,6 +37,9 @@
 	$(RM) -r gen-*/
 	$(RM) -r php_ext_dir
 
+distdir:
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
 dist-hook:
 	$(RM) -r $(distdir)/gen-*/
 	$(RM) -r $(distdir)/php_ext_dir/