diff --git a/README.md b/README.md
index 03a47e7..3178035 100644
--- a/README.md
+++ b/README.md
@@ -29,9 +29,9 @@ ruby -r numo/narray -e "puts Numo::DFloat.new(1000).rand_norm.to_a" \
 <img src="https://i.imgur.com/wpsoGJq.png" width="75%" height="75%">
 
 ```sh
-echo "from numpy import random;" \
-     "n = random.randn(10000);"  \
-     "print('\\\n'.join(str(i) for i in n))" \
+echo -e "from numpy import random;" \
+        "n = random.randn(10000);"  \
+        "print('\\\n'.join(str(i) for i in n))" \
 | python \
 | uplot hist --nbins 20
 ```