diff --git a/testdata/styles/Readability/ColemanLiau.yml b/testdata/styles/Readability/ColemanLiau.yml
index 3d56c6afc..d478303c2 100644
--- a/testdata/styles/Readability/ColemanLiau.yml
+++ b/testdata/styles/Readability/ColemanLiau.yml
@@ -1,5 +1,5 @@
 extends: metric
-message: "Try to keep the Coleman–Liau Index grade (%s) below 19."
+message: "Try to keep the Coleman–Liau Index grade (%s) below 9."
 link: https://en.wikipedia.org/wiki/Coleman%E2%80%93Liau_index
 
 formula: |