diff --git a/src/fsfw/datapool/definitions.h b/src/fsfw/datapool/definitions.h
index eacab98a..8f57ffb8 100644
--- a/src/fsfw/datapool/definitions.h
+++ b/src/fsfw/datapool/definitions.h
@@ -35,7 +35,7 @@ union structure_id_t {
   static constexpr uint32_t INVALID_OBJECT_ID = objects::NO_OBJECT;
   static constexpr uint32_t INVALID_SET_ID = -1;
 
-  structure_id_t() : raw(INVALID_SID) {}
+  constexpr structure_id_t() : raw(INVALID_SID) {}
 
   constexpr structure_id_t(object_id_t objectId, uint32_t setId)
       : objectId(objectId), ownerSetId(setId) {}
@@ -43,9 +43,8 @@ union structure_id_t {
   struct {
     object_id_t objectId;
     /**
-     * A generic 32 bit ID to identify unique HK packets for a single
-     * object. For example, the DeviceCommandId_t is used for
-     * DeviceHandlers
+     * A generic 32 bit ID to identify unique HK set packets for a single
+     * object.
      */
     uint32_t ownerSetId;
   };