1 files changed, 1 insertions, 1 deletions
diff --git a/builtin.c b/builtin.c
index 6e4a1b72..3eb09b48 100644
--- a/builtin.c
+++ b/builtin.c
@@ -1569,7 +1569,7 @@ mpf1:
 			s0 = s1;
 			break;
 		default:
-			if (do_lint && isalpha(cs1))
+			if (do_lint && is_alpha(cs1))
 				lintwarn(_("ignoring unknown format specifier character `%c': no argument converted"), cs1);
 			break;
 		}