diff --git a/lib/std/math/big/int.zig b/lib/std/math/big/int.zig
index 5a00947ac3..003ea6ae4b 100644
--- a/lib/std/math/big/int.zig
+++ b/lib/std/math/big/int.zig
@@ -2081,7 +2081,7 @@ pub const Const = struct {
         for (self.limbs[0..self.limbs.len]) |limb| {
             std.debug.print("{x} ", .{limb});
         }
-        std.debug.print("len={} positive={}\n", .{ self.len, self.positive });
+        std.debug.print("len={} positive={}\n", .{ self.limbs.len, self.positive });
     }
 
     pub fn abs(self: Const) Const {