diff --git a/docs/generated/contab/siri.html b/docs/generated/contab/siri.html
index 80f81210..e3bcc5b8 100644
--- a/docs/generated/contab/siri.html
+++ b/docs/generated/contab/siri.html
@@ -118752,7 +118752,7 @@ <h3>15.13. The complex type <code>siri:EstimatedVehicleJourneyStructure</code>
                     </p>
                   </td>
                   <td colspan="1" rowspan="1" class="tableblock halign-left valign-top">
-                    <p class="tableblock darkbrown">Velocity of VEHICLE. EIther actual speed or average speed may be used. (since SIRI 2.0)</p>
+                    <p class="tableblock darkbrown">Velocity of VEHICLE. Either actual speed or average speed may be used. (since SIRI 2.0)</p>
                   </td>
                 </tr>
                 <tr>
@@ -164182,7 +164182,7 @@ <h3>24.5. The group <code>siri:JourneyProgressGroup</code>
                     </p>
                   </td>
                   <td colspan="1" rowspan="1" class="tableblock halign-left valign-top">
-                    <p class="tableblock darkbrown">Velocity of VEHICLE. EIther actual speed or average speed may be used. (since SIRI 2.0)</p>
+                    <p class="tableblock darkbrown">Velocity of VEHICLE. Either actual speed or average speed may be used. (since SIRI 2.0)</p>
                   </td>
                 </tr>
                 <tr>
@@ -166145,7 +166145,7 @@ <h3>24.10. The group <code>siri:ProgressDataGroup</code>
                     </p>
                   </td>
                   <td colspan="1" rowspan="1" class="tableblock halign-left valign-top">
-                    <p class="tableblock darkbrown">Velocity of VEHICLE. EIther actual speed or average speed may be used. (since SIRI 2.0)</p>
+                    <p class="tableblock darkbrown">Velocity of VEHICLE. Either actual speed or average speed may be used. (since SIRI 2.0)</p>
                   </td>
                 </tr>
                 <tr>
@@ -170736,7 +170736,7 @@ <h3>24.19. The complex type <code>siri:MonitoredVehicleJourneyStructure</code>
                     </p>
                   </td>
                   <td colspan="1" rowspan="1" class="tableblock halign-left valign-top">
-                    <p class="tableblock darkbrown">Velocity of VEHICLE. EIther actual speed or average speed may be used. (since SIRI 2.0)</p>
+                    <p class="tableblock darkbrown">Velocity of VEHICLE. Either actual speed or average speed may be used. (since SIRI 2.0)</p>
                   </td>
                 </tr>
                 <tr>
@@ -249977,7 +249977,7 @@ <h3>45.1. Simple type definitions</h3>
                     <p class="tableblock">xs:nonNegativeInteger: (empty restriction)</p>
                   </td>
                   <td colspan="1" rowspan="1" class="tableblock halign-left valign-top">
-                    <p class="tableblock anno-text">Distance (metres) as defined by http://www.ordnancesurvey.co.uk/xml/resource/units.xml#metres. ALternative units may be specifed by context.</p>
+                    <p class="tableblock anno-text">Distance (in metres) as defined by http://www.ordnancesurvey.co.uk/xml/resource/units.xml#metres.</p>
                   </td>
                 </tr>
                 <tr>
@@ -250037,7 +250037,7 @@ <h3>45.1. Simple type definitions</h3>
                     <p class="tableblock">xs:nonNegativeInteger: (empty restriction)</p>
                   </td>
                   <td colspan="1" rowspan="1" class="tableblock halign-left valign-top">
-                    <p class="tableblock anno-text">Distance (metres per second) ALternative unist may be specifed by context.</p>
+                    <p class="tableblock anno-text">Velocity (in metres per second).</p>
                   </td>
                 </tr>
               </tbody>
@@ -258785,7 +258785,7 @@ <h3>50.32. The complex type <code>complexType[siri:VehicleActivityStructure]/Mon
                     </p>
                   </td>
                   <td colspan="1" rowspan="1" class="tableblock halign-left valign-top">
-                    <p class="tableblock darkbrown">Velocity of VEHICLE. EIther actual speed or average speed may be used. (since SIRI 2.0)</p>
+                    <p class="tableblock darkbrown">Velocity of VEHICLE. Either actual speed or average speed may be used. (since SIRI 2.0)</p>
                   </td>
                 </tr>
                 <tr>
diff --git a/xsd/siri_model/siri_monitoredVehicleJourney.xsd b/xsd/siri_model/siri_monitoredVehicleJourney.xsd
index df0e4836..38c74be5 100644
--- a/xsd/siri_model/siri_monitoredVehicleJourney.xsd
+++ b/xsd/siri_model/siri_monitoredVehicleJourney.xsd
@@ -200,7 +200,7 @@ MonitoringError must not be used if Monitored is omitted or set to 'true'.</xsd:
 			</xsd:element>
 			<xsd:element name="Velocity" type="VelocityType" minOccurs="0">
 				<xsd:annotation>
-					<xsd:documentation>Velocity of VEHICLE. EIther actual speed or average speed may be used. (since SIRI 2.0)</xsd:documentation>
+					<xsd:documentation>Velocity of VEHICLE. Either actual speed or average speed may be used. (since SIRI 2.0)</xsd:documentation>
 				</xsd:annotation>
 			</xsd:element>
 			<xsd:element name="EngineOn" type="xsd:boolean" default="true" minOccurs="0">
diff --git a/xsd/siri_utility/siri_location.xsd b/xsd/siri_utility/siri_location.xsd
index 9ba2da4c..133be05d 100644
--- a/xsd/siri_utility/siri_location.xsd
+++ b/xsd/siri_utility/siri_location.xsd
@@ -252,13 +252,13 @@ A flexible area is used in cases where a pre-booked service allows pick-up/drop-
 	<!--======Distance ============================================================-->
 	<xsd:simpleType name="DistanceType">
 		<xsd:annotation>
-			<xsd:documentation>Distance (metres) as defined by http://www.ordnancesurvey.co.uk/xml/resource/units.xml#metres. ALternative units may be specifed by context.</xsd:documentation>
+			<xsd:documentation>Distance (in metres) as defined by http://www.ordnancesurvey.co.uk/xml/resource/units.xml#metres.</xsd:documentation>
 		</xsd:annotation>
 		<xsd:restriction base="xsd:nonNegativeInteger"/>
 	</xsd:simpleType>
 	<xsd:simpleType name="VelocityType">
 		<xsd:annotation>
-			<xsd:documentation>Distance (metres per second) ALternative unist may be specifed by context.</xsd:documentation>
+			<xsd:documentation>Velocity (in metres per second).</xsd:documentation>
 		</xsd:annotation>
 		<xsd:restriction base="xsd:nonNegativeInteger"/>
 	</xsd:simpleType>