diff --git a/data/api/server-server/definitions/transaction.yaml b/data/api/server-server/definitions/transaction.yaml
index 0c307b43..25acda9e 100644
--- a/data/api/server-server/definitions/transaction.yaml
+++ b/data/api/server-server/definitions/transaction.yaml
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# note that this defintion excludes `edus`, which are typically included in
+# note that this definition excludes `edus`, which are typically included in
 # a transaction; this is so that it can be referenced in single_pdu_transaction.
 
 type: object