diff --git a/app/src/frontend/building/data-containers/planning.tsx b/app/src/frontend/building/data-containers/planning.tsx
index 875b1713..e759f169 100644
--- a/app/src/frontend/building/data-containers/planning.tsx
+++ b/app/src/frontend/building/data-containers/planning.tsx
@@ -68,8 +68,8 @@ const PlanningView: React.FunctionComponent<CategoryViewProps> = (props) => {
         <DataEntryGroup name="Planning application information" collapsed={true} >
             <DataEntryGroup name="Current/active applications (official data)" collapsed={false} >
                 <InfoBox>
-                    To see planning applications visualised for different periods click on the map key dropdown.
-                
+                    This section lists active applications. Active applications are defined here as ones with a decision date less than year ago <i>and</i> time with a registration date less than year ago.
+                    <br />
                     To comment on an application follow the application link if provided, or visit the relevant local authority's planning page.
                 </InfoBox>
                 {props.building.planning_data ?