diff --git a/hack/verify-spelling.sh b/hack/verify-spelling.sh
index 0a4e23517ec..b3d636b91af 100755
--- a/hack/verify-spelling.sh
+++ b/hack/verify-spelling.sh
@@ -13,6 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# This script checks commonly misspelled English words in all files in the
+# working directory by client9/misspell package.
+# Usage: hack/verify-spelling.sh
+
 set -o errexit
 set -o nounset
 set -o pipefail