diff --git a/libsrc/geos/dlgbox/.cvsignore b/libsrc/geos/dlgbox/.cvsignore
new file mode 100644
index 000000000..cd151f91e
--- /dev/null
+++ b/libsrc/geos/dlgbox/.cvsignore
@@ -0,0 +1 @@
+messagebox.s