1 files changed, 1 insertions, 1 deletions

diff --git a/src/lisp.h b/src/lisp.h
index 9c4631bd1d9..b13f4e26378 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -1583,7 +1583,7 @@ EXFUN (Fforward_line, 1);
 /* Defined in coding.c */
 EXFUN (Fcoding_system_p, 1);
 EXFUN (Fcheck_coding_system, 1);
-EXFUN (Fread_coding_system, 1);
+EXFUN (Fread_coding_system, 2);
 EXFUN (Fread_non_nil_coding_system, 1);
 EXFUN (Ffind_operation_coding_system, MANY);