diff --git a/Python/initconfig.c b/Python/initconfig.c
index b28e0a07646..69711d8eab3 100644
--- a/Python/initconfig.c
+++ b/Python/initconfig.c
@@ -2593,7 +2593,7 @@ init_dump_ascii_wstr(const wchar_t *str)
         if (ch == L'\'') {
             PySys_WriteStderr("\\'");
         } else if (0x20 <= ch && ch < 0x7f) {
-            PySys_WriteStderr("%lc", ch);
+            PySys_WriteStderr("%c", ch);
         }
         else if (ch <= 0xff) {
             PySys_WriteStderr("\\x%02x", ch);