1 files changed, 4 insertions, 2 deletions
diff --git a/builtin.c b/builtin.c
index d85d3dbd..b12844c3 100644
--- a/builtin.c
+++ b/builtin.c
@@ -2757,6 +2757,8 @@ do_sub(int nargs, unsigned int flags)
 				if ((t1->flags & NUMCUR) != 0)
 					goto set_how_many;
 
+				warning(_("gensub: third argument of `%.*s' treated as 1"),
+						(int) t1->stlen, t1->stptr);
 				how_many = 1;
 			}
 		} else {
@@ -2769,8 +2771,8 @@ set_how_many:
 				how_many = d;
 			else
 				how_many = LONG_MAX;
-			if (d == 0)
-				warning(_("gensub: third argument of 0 treated as 1"));
+			if (d <= 0)
+				warning(_("gensub: third argument of %g treated as 1"), d);
 		}
 		DEREF(t1);