diff --git a/agent/src/Handler/Backups.hs b/agent/src/Handler/Backups.hs
index ae29bf235..c93866865 100644
--- a/agent/src/Handler/Backups.hs
+++ b/agent/src/Handler/Backups.hs
@@ -57,6 +57,15 @@ instance FromJSON RestoreBackupReq where
         restoreBackupPassword    <- o .:? "password" .!= Nothing
         pure RestoreBackupReq { .. }
 
+data DeleteDisksReq = DeleteDisksReq
+    { deleteDisksLogicalName :: Text 
+    } deriving (Eq, Show)
+instance FromJSON DeleteDisksReq where
+    parseJSON = withObject "Eject Disk Req" $ \o -> do
+        deleteDisksLogicalName <- o .: "logicalName"
+        pure DeleteDisksReq { .. }
+
+
 -- Handlers
 
 postCreateBackupR :: AppId -> Handler ()
@@ -99,14 +108,7 @@ getDisksR :: Handler (JSONResponse [AppMgr.DiskInfo])
 getDisksR = fmap JSONResponse . runM . handleS9ErrC $ listDisksLogic
 
 deleteDisksR :: Handler ()
-deleteDisksR = runM . handleS9ErrC $ do
-    logicalName <- lookupGetParam "logicalName" >>= orThrow400
-    ejectDiskLogic logicalName
-    where
-        orThrow400 = \case
-            Nothing -> throwError $ ParamsE "logicalName"
-            Just p  -> pure p
-
+deleteDisksR = runM . handleS9ErrC $ requireCheckJsonBody >>= ejectDiskLogic . deleteDisksLogicalName
 
 -- Logic
 
diff --git a/ui/src/app/services/api/live-api.service.ts b/ui/src/app/services/api/live-api.service.ts
index 8c6bd2836..953ba4639 100644
--- a/ui/src/app/services/api/live-api.service.ts
+++ b/ui/src/app/services/api/live-api.service.ts
@@ -13,7 +13,6 @@ import { modulateTime } from 'src/app/util/misc.util'
 
 @Injectable()
 export class LiveApiService extends ApiService {
-  
   constructor (
     private readonly http: HttpService,
     // TODO remove app + server model from here. updates to state should be done in a separate class wrapping ApiService + App/ServerModel
@@ -63,7 +62,7 @@ export class LiveApiService extends ApiService {
   }
 
   async ejectExternalDisk (logicalName: string): Promise<Unit> {
-    return this.authRequest({ method: Method.DELETE, url: `/disks?logicalName=${encodeURIComponent(logicalName)}` })
+    return this.authRequest({ method: Method.DELETE, url: `/disks`, data: { logicalName } })
   }
 
   async updateAgent (version: string): Promise<Unit> {