diff --git a/.ci/format.sh b/.ci/format.sh
index be15598a..89fa4e88 100755
--- a/.ci/format.sh
+++ b/.ci/format.sh
@@ -9,6 +9,6 @@ set -o errexit
 set -o pipefail
 set -o nounset
 
-FILES=`find include src tests -type f -type f \( -iname "*.cc" -o -iname "*.h" \)`
+FILES=`find include src -type f -type f \( -iname "*.cc" -o -iname "*.h" \)`
 
 clang-format -i $FILES && git diff --exit-code