diff --git a/scripts/build_wheel.sh b/scripts/build_wheel.sh
index df421ceb59..ba9a3854e2 100755
--- a/scripts/build_wheel.sh
+++ b/scripts/build_wheel.sh
@@ -38,6 +38,8 @@ echo -e "${BGREEN}HEAD${RESET}:"
 git_show HEAD
 echo
 
+# If the classifiers are invalid, publishing to PyPI will fail but the build will succeed.
+# It's a fast check, do it early.
 echo "Checking pyproject classifiers..."
 python3 ./check_classifiers.py ../pyproject.toml
 echo
diff --git a/scripts/check_classifiers.py b/scripts/check_classifiers.py
index 7120049df6..de2ccd073e 100644
--- a/scripts/check_classifiers.py
+++ b/scripts/check_classifiers.py
@@ -3,6 +3,9 @@ import sys
 import urllib.request
 from pathlib import Path
 
+# This script checks the classifiers in a pyproject.toml file against the official Trove classifier list.
+# If the classifiers are invalid, PyPI will reject the package upload.
+
 # Step 1: Get pyproject.toml path from args
 if len(sys.argv) != 2:
     print(f"Usage: {sys.argv[0]} path/to/pyproject.toml", file=sys.stderr)