diff --git a/src/lib/aqdiagram/graph/datapair.t2d b/src/lib/aqdiagram/graph/datapair.t2d
index f589d82..1cecf00 100644
--- a/src/lib/aqdiagram/graph/datapair.t2d
+++ b/src/lib/aqdiagram/graph/datapair.t2d
@@ -40,7 +40,7 @@
         <flags>sortbymember</flags>
       </member>
 
-      <member name="subGraphId" type="int" maxlen="8" >
+      <member name="categoryId" type="uint32_t" maxlen="8" >
         <default>0</default>
         <preset>0</preset>
         <access>public</access>