diff --git a/docs/plugins/.gitignore b/docs/plugins/.gitignore
index a77f035bfb..73d2bbd3fe 100644
--- a/docs/plugins/.gitignore
+++ b/docs/plugins/.gitignore
@@ -4,6 +4,7 @@ Makefile.in
 *-decl.txt
 *-decl-list.txt
 *-undocumented.txt
+*-undeclared.txt
 *-unused.txt
 
 tmpl