diff --git a/tools/clang-format-all.sh b/tools/clang-format-all.sh
index bf6847931..4cd302409 100755
--- a/tools/clang-format-all.sh
+++ b/tools/clang-format-all.sh
@@ -4,4 +4,5 @@ read -p "Are you sure you want to run clang-format on all files in src/? (y/n) "
 echo
 if [[ $REPLY =~ ^[Yy]$ ]]; then
     find src/ \( -iname "*.hpp" -o -iname "*.cpp" \) -exec clang-format -i {} \;
+    find tests/src/ \( -iname "*.hpp" -o -iname "*.cpp" \) -exec clang-format -i {} \;
 fi