diff --git a/.github/vale/styles/Aiven/aiven_spelling.yml b/.github/vale/styles/Aiven/aiven_spelling.yml
index 70f85382de..9664d56aa3 100644
--- a/.github/vale/styles/Aiven/aiven_spelling.yml
+++ b/.github/vale/styles/Aiven/aiven_spelling.yml
@@ -4,5 +4,6 @@ message: "'%s' does not seem to be a recognised word"
 dicpath: .github/vale/dicts
 # We want to add our dictionary on top of the default dictionary
 append: true
+level: error
 dictionaries:
   - aiven
diff --git a/.github/vale/styles/Aiven/capitalization_headings.yml b/.github/vale/styles/Aiven/capitalization_headings.yml
index 6f1a703647..931f15717b 100644
--- a/.github/vale/styles/Aiven/capitalization_headings.yml
+++ b/.github/vale/styles/Aiven/capitalization_headings.yml
@@ -1,6 +1,6 @@
 extends: capitalization
 message: "'%s' should be in sentence case"
-level: warning
+level: error
 scope: heading
 # $title, $sentence, $lower, $upper, or a pattern.
 match: $sentence