diff --git a/docs/appengine/datastore/indexes/index.yaml b/docs/appengine/datastore/indexes/index.yaml
index d464625fd6..fc175b0831 100644
--- a/docs/appengine/datastore/indexes/index.yaml
+++ b/docs/appengine/datastore/indexes/index.yaml
@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+// [START gae_datastore_exploding_index_2_yaml_go]
 // [START exploding_index_example_2]
 indexes:
 - kind: Widget
@@ -20,8 +21,9 @@ indexes:
   - name: Y
   - name: Date
 // [END exploding_index_example_2]
+// [END gae_datastore_exploding_index_2_yaml_go]
 
-
+// [START gae_datastore_exploding_index_4_yaml_go]
 // [START exploding_index_example_4]
 indexes:
 - kind: Widget
@@ -33,4 +35,4 @@ indexes:
   - name: Y
   - name: Date
 // [END exploding_index_example_4]
-
+// [END gae_datastore_exploding_index_4_yaml_go]
\ No newline at end of file