diff --git a/src/pages/assets/AssetDetails.jsx b/src/pages/assets/AssetDetails.jsx
index dc99191..ddf9556 100644
--- a/src/pages/assets/AssetDetails.jsx
+++ b/src/pages/assets/AssetDetails.jsx
@@ -168,18 +168,21 @@ export default function AssetDetails() {
   const isAssigned = isAssetState(row, ASSET_STATE.ASSIGNED)
   const isAvailable = isAssetState(row, ASSET_STATE.AVAILABLE)
   const isUnderRepair = isAssetState(row, ASSET_STATE.UNDER_REPAIR)
-  // ASSIGNED and Send for Repair run in Available; Reassigned in Assigned; Lost
-  // in either; Repair Completed in Under Repair; Edit in all three. RETURNED
-  // runs in any state but Closed, and the runtime says if the state doesn't
-  // allow it. If the view sends no state, let the runtime decide rather than
-  // hiding the buttons.
+  // ASSIGNED, Send for Repair and Edit (Asset details) run in Available;
+  // Reassigned in Assigned; Lost in either; Repair Completed in Under Repair.
+  // The builder has Asset details in Available only, so the runtime rejects it
+  // elsewhere ("Asset details" is not allowed in "Assigned"). RETURNED runs in
+  // any state but Closed, and the runtime says if the state doesn't allow it.
+  // If the view sends no state, let the runtime decide rather than hiding the
+  // buttons.
+  const isOpen = !state || isAvailable || isAssigned || isUnderRepair
   const canAssign = !state || isAvailable
   const canReassign = !state || isAssigned
   const canReturn = !isAssetState(row, ASSET_STATE.CLOSED) && !isEndState(row)
   const canReportLost = !state || isAvailable || isAssigned
   const canSendForRepair = !state || isAvailable
   const canCompleteRepair = !state || isUnderRepair
-  const canEdit = !state || isAvailable || isAssigned || isUnderRepair
+  const canEdit = !state || isAvailable
 
   // Assigned or reassigned, whichever is newer, is who has it now.
   const current = currentAssignment(row)
@@ -251,7 +254,12 @@ export default function AssetDetails() {
             <Button icon="history" onClick={load} disabled={loading}>
               {loading ? 'Refreshing…' : 'Refresh'}
             </Button>
-            <Button icon="edit" onClick={() => openActivity('edit')} disabled={!canEdit}>
+            <Button
+              icon="edit"
+              onClick={() => openActivity('edit')}
+              disabled={!canEdit}
+              title={canEdit ? undefined : 'Only an Available asset can be edited. Return it first.'}
+            >
               Edit
             </Button>
             <Button
@@ -289,7 +297,7 @@ export default function AssetDetails() {
         }
       />
 
-      {!canEdit && (
+      {!isOpen && (
         <div className="notice notice--warning" role="status">
           <Icon name="alert" size={15} />
           <span>