diff --git a/CHANGELOG.md b/CHANGELOG.md
index f4f81bd..98fb08a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Modified API tests to use `session` parameter.
 - Modified `api/owner` endpoint to use a specific data structure to create new owners
+- Modified `api/owner` endpoint to use session as input
 
 ## [1.4.1] - 2023-05-02
 
diff --git a/src/ZGoBackend.hs b/src/ZGoBackend.hs
index 32d3190..d3dfc70 100644
--- a/src/ZGoBackend.hs
+++ b/src/ZGoBackend.hs
@@ -914,35 +914,35 @@ routes pipe config = do
   get "/getaddr" $ do Web.Scotty.json (object ["addr" .= nodeAddress])
   --Get owner by address
   get "/api/owner" $ do
-    addr <- param "address"
-    owner <- liftAndCatchIO $ run (findOwner addr)
-    case owner of
+    session <- param "session"
+    user <- liftAndCatchIO $ run (findUser session)
+    case parseUserBson =<< user of
       Nothing -> status noContent204
-      Just o -> do
-        let pOwner = cast' (Doc o)
-        case pOwner of
-          Nothing -> status internalServerError500
-          Just q -> do
+      Just u -> do
+        owner <- liftAndCatchIO $ run (findOwner $ uaddress u)
+        case cast' . Doc =<< owner of
+          Nothing -> status noContent204
+          Just o -> do
             status ok200
             Web.Scotty.json
               (object
                  [ "message" .= ("Owner found!" :: String)
                  , "owner" .=
                    object
-                     [ "_id" .= (maybe "" show $ o_id q :: String)
-                     , "address" .= oaddress q
-                     , "name" .= oname q
-                     , "currency" .= ocurrency q
-                     , "tax" .= otax q
-                     , "taxValue" .= otaxValue q
-                     , "vat" .= ovat q
-                     , "vatValue" .= ovatValue q
-                     , "paid" .= opaid q
-                     , "zats" .= ozats q
-                     , "invoices" .= oinvoices q
-                     , "expiration" .= oexpiration q
-                     , "payconf" .= opayconf q
-                     , "crmToken" .= ocrmToken q
+                     [ "_id" .= (maybe "" show $ o_id o :: String)
+                     , "address" .= oaddress o
+                     , "name" .= oname o
+                     , "currency" .= ocurrency o
+                     , "tax" .= otax o
+                     , "taxValue" .= otaxValue o
+                     , "vat" .= ovat o
+                     , "vatValue" .= ovatValue o
+                     , "paid" .= opaid o
+                     , "zats" .= ozats o
+                     , "invoices" .= oinvoices o
+                     , "expiration" .= oexpiration o
+                     , "payconf" .= opayconf o
+                     , "crmToken" .= ocrmToken o
                      ]
                  ])
   get "/api/ownerid" $ do