1 files changed, 1 insertions, 0 deletions
diff --git a/halibut.h b/halibut.h
index 3cb1ed7..1ff014e 100644
--- a/halibut.h
+++ b/halibut.h
@@ -252,6 +252,7 @@ enum {
     err_pfhead,			       /* bad Type 1 header line */
     err_pfbad,			       /* otherwise invalide Type 1 font */
     err_pfnoafm,		       /* Type 1 font but no AFM */
+    err_chmnames,		       /* need both or neither of hhp+chm */
     err_whatever                       /* random error of another type */
 };