diff --git a/.hgignore b/.hgignore
index 27a90f5e..3832d65e 100644
--- a/.hgignore
+++ b/.hgignore
@@ -29,6 +29,7 @@ src/stamp-h1
 src/config.h
 src/config.h.in
 src/wget
+src/cscope.out
 src/tags
 src/TAGS
 src/libunittest.a