--- a/CMakeLists.txt	Tue Jun 28 19:31:55 2022 +0300
+++ b/CMakeLists.txt	Tue Jun 28 19:35:09 2022 +0300
@@ -106,7 +106,6 @@
 	src/model.h
 	src/parser.h
 	src/polygoncache.h
-	src/ring.h
 	src/settings.h
 	src/typeconversions.h
 	src/uiutilities.h