diff --git a/c/ch11/output/advect.test2 b/c/ch11/output/advect.test2
index 2fa4a10a..b93bdf03 100644
--- a/c/ch11/output/advect.test2
+++ b/c/ch11/output/advect.test2
@@ -5,6 +5,6 @@ solving problem rotation with stump initial state on 20 x 20 grid,
     1 SNES Function norm 0.940691
     2 SNES Function norm 0.108796
     3 SNES Function norm 0.00139433
-    4 SNES Function norm 1.74307e-07
+    4 SNES Function norm 1.74309e-07
 1 TS dt 0.02 time 0.02
 completed 1 steps to time 0.02