diff --git a/frontend/src/views/machines/MachineDetail.vue b/frontend/src/views/machines/MachineDetail.vue
index 814cc8a..b6ef32b 100644
--- a/frontend/src/views/machines/MachineDetail.vue
+++ b/frontend/src/views/machines/MachineDetail.vue
@@ -252,13 +252,18 @@ const equipment = ref(null)
 const { warranties, heroWarranty, warrantyDate } = useWarrantyBadge(() => equipment.value?.assetid)
 const relationships = ref({ incoming: [], outgoing: [] })
 
+// type name is data, sites may seed 'controls' or 'Controls' - compare folded
+function isControls(rel) {
+  return (rel.relationshiptypename || '').toLowerCase() === 'controls'
+}
+
 const controllingPc = computed(() => {
   // For equipment, find a related computer in any "Controls" relationship
   // Check both incoming (computer controls this) and outgoing (legacy data may have equipment -> computer)
 
   // First check incoming - computer as source controlling this equipment
   for (const rel of relationships.value.incoming || []) {
-    if (rel.sourceasset?.assettypename === 'computer' && rel.relationshiptypename === 'Controls') {
+    if (rel.sourceasset?.assettypename === 'computer' && isControls(rel)) {
       return {
         ...rel.sourceasset,
         relationshipType: rel.relationshiptypename
@@ -268,7 +273,7 @@ const controllingPc = computed(() => {
 
   // Also check outgoing - legacy data may have equipment -> computer Controls relationships
   for (const rel of relationships.value.outgoing || []) {
-    if (rel.targetasset?.assettypename === 'computer' && rel.relationshiptypename === 'Controls') {
+    if (rel.targetasset?.assettypename === 'computer' && isControls(rel)) {
       return {
         ...rel.targetasset,
         relationshipType: rel.relationshiptypename
diff --git a/frontend/src/views/machines/MachineForm.vue b/frontend/src/views/machines/MachineForm.vue
index 09a65e4..dc734f1 100644
--- a/frontend/src/views/machines/MachineForm.vue
+++ b/frontend/src/views/machines/MachineForm.vue
@@ -473,8 +473,8 @@ onMounted(async () => {
       relationshipTypes.value = [{ relationshiptypeid: 1, relationshiptype: 'Controls' }]
     }
 
-    // Set default relationship type to "Controls" if available
-    const controlsType = relationshipTypes.value.find(t => t.relationshiptype === 'Controls')
+    // Set default relationship type to "Controls" if available (name is data, compare folded)
+    const controlsType = relationshipTypes.value.find(t => (t.relationshiptype || '').toLowerCase() === 'controls')
     if (controlsType) {
       relationshipTypeId.value = controlsType.relationshiptypeid
     }
@@ -515,7 +515,7 @@ onMounted(async () => {
 
           // Check incoming relationships for a controlling PC
           for (const rel of relationships.incoming || []) {
-            if (rel.sourceasset?.assettypename === 'computer' && rel.relationshiptypename === 'Controls') {
+            if (rel.sourceasset?.assettypename === 'computer' && (rel.relationshiptypename || '').toLowerCase() === 'controls') {
               controllingPcId.value = rel.sourceasset.assetid
               relationshipTypeId.value = rel.relationshiptypeid
               existingRelationshipId.value = rel.assetrelationshipid
diff --git a/frontend/src/views/pcs/PCDetail.vue b/frontend/src/views/pcs/PCDetail.vue
index 368ef1c..d59b27f 100644
--- a/frontend/src/views/pcs/PCDetail.vue
+++ b/frontend/src/views/pcs/PCDetail.vue
@@ -272,13 +272,18 @@ const installedApps = ref([])
 // Warranty fetch + hero badge (shared across asset detail pages).
 const { warranties, heroWarranty, warrantyDate: formatWarrantyDate } = useWarrantyBadge(() => computer.value?.assetid)
 
+// type name is data, sites may seed 'controls' or 'Controls' - compare folded
+function isControls(rel) {
+  return (rel.relationshiptypename || '').toLowerCase() === 'controls'
+}
+
 const controlledEquipment = computed(() => {
   // For computers, find related equipment in any "Controls" relationship
   const items = []
 
   // Check outgoing - computer controls equipment
   for (const rel of relationships.value.outgoing || []) {
-    if (rel.targetasset?.assettypename === 'equipment' && rel.relationshiptypename === 'Controls') {
+    if (rel.targetasset?.assettypename === 'equipment' && isControls(rel)) {
       items.push({
         ...rel.targetasset,
         relationshipid: rel.relationshipid,
@@ -289,7 +294,7 @@ const controlledEquipment = computed(() => {
 
   // Also check incoming - legacy data may have equipment -> computer Controls relationships
   for (const rel of relationships.value.incoming || []) {
-    if (rel.sourceasset?.assettypename === 'equipment' && rel.relationshiptypename === 'Controls') {
+    if (rel.sourceasset?.assettypename === 'equipment' && isControls(rel)) {
       items.push({
         ...rel.sourceasset,
         relationshipid: rel.relationshipid,