diff --git a/src/comerr/.cvsignore b/src/comerr/.cvsignore
index 4f14168592..8f618b14d1 100644
--- a/src/comerr/.cvsignore
+++ b/src/comerr/.cvsignore
@@ -2,3 +2,4 @@ AFS_component_version_number.c
 Makefile
 compile_et
 et_lex.lex.c
+y.tab.h