diff --git a/tutorials/obstacle/low_res/common.txt b/tutorials/obstacle/low_res/common.txt
index 0e1030d38b54aba667477d1e6a7e292400bfbc57..d1cd795250d6c7fa646ff58af04b05f74560fd26 100644
--- a/tutorials/obstacle/low_res/common.txt
+++ b/tutorials/obstacle/low_res/common.txt
@@ -6,7 +6,7 @@ physic = acoustic
 equation = simplewave
 L = 6
 H = 2
-Hsub = 0.1
+Hsub = 0.2
 # Initial parameters
 Re(m_superc0) = 4e-7
 Im(m_superc0) = 0