diff --git a/sexp.h b/sexp.h
index 151603777216fa3808d970ecdcda1365fb303a35..6ef775e5745e3d82f9ad5633b35d1a3ca76e4639 100644
--- a/sexp.h
+++ b/sexp.h
@@ -29,7 +29,7 @@
 #include <inttypes.h>
 
 enum sexp_type
-  { SEXP_START, SEXP_ATOM, SEXP_LIST, SEXP_END };
+  { SEXP_ATOM, SEXP_LIST, SEXP_END };
 
 struct sexp_iterator
 {