diff --git a/libsrc/.cvsignore b/libsrc/.cvsignore
index 4e3be73d4..0b9fd880a 100644
--- a/libsrc/.cvsignore
+++ b/libsrc/.cvsignore
@@ -1,3 +1,4 @@
 *.emd
+*.joy
 *.lib
 *.tgi