diff --git a/configure.ac b/configure.ac
index d4e095b129..5499aea2f8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -434,6 +434,7 @@ ext/libswscale/Makefile
 gst-libs/Makefile
 gst-libs/ext/Makefile
 docs/Makefile
+docs/plugins/Makefile
 docs/version.entities
 tests/Makefile
 tests/check/Makefile