diff --git a/lib/krb5/version-script.map b/lib/krb5/version-script.map
index 55e466e81..30fec0aa6 100644
--- a/lib/krb5/version-script.map
+++ b/lib/krb5/version-script.map
@@ -125,6 +125,7 @@ HEIMDAL_KRB5_1.0 {
 		krb5_checksum_is_collision_proof;
 		krb5_checksum_is_keyed;
 		krb5_checksumsize;
+		krb5_cksumtype_to_enctype;
 		krb5_cksumtype_valid;
 		krb5_clear_error_string;
 		krb5_closelog;