diff --git a/Makefile.am b/Makefile.am
index 0c679b2..15fae88 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -56,6 +56,7 @@ EXTRA_DIST =	Kyuafile \
 		tests/lib1/isystem.pc \
 		tests/lib1/depgraph-break.pc \
 		tests/lib1/cflags-whitespace.pc \
+		tests/lib1/cflags-whitespace-trailing.pc \
 		tests/lib1/provides.pc \
 		tests/lib1/provides-request-simple.pc