diff --git a/src/schema_formats/XML/GMP.xml.in b/src/schema_formats/XML/GMP.xml.in
index 6d3241b5d..22221b195 100644
--- a/src/schema_formats/XML/GMP.xml.in
+++ b/src/schema_formats/XML/GMP.xml.in
@@ -8107,6 +8107,7 @@ END:VCALENDAR
           <summary>Aggregate data for all resources of the selected type</summary>
           <pattern>
             <e>count</e>
+            <e>c_count</e>
             <e>min</e>
             <e>max</e>
             <e>mean</e>
@@ -8117,6 +8118,12 @@ END:VCALENDAR
             <summary>Overall number of resources</summary>
             <pattern><t>integer</t></pattern>
           </ele>
+          <ele>
+            <name>c_count</name>
+            <summary>Cumulative number of resources</summary>
+            <description>For overall this is always the same as count.</description>
+            <pattern><t>integer</t></pattern>
+          </ele>
           <ele>
             <name>min</name>
             <summary>Overall minimum value of the data column</summary>