diff --git a/Modules/readline.c b/Modules/readline.c
index 51844f7..705d766 100644
--- a/Modules/readline.c
+++ b/Modules/readline.c
@@ -802,6 +802,8 @@
 {
 #ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
 	rl_completion_append_character ='\0';
+#endif
+#ifdef HAVE_RL_COMPLETION_SUPPRESS_APPEND
 	rl_completion_suppress_append = 0;
 #endif
 	Py_XDECREF(begidx);