diff --git a/apps/files_sharing/openapi.json b/apps/files_sharing/openapi.json
index 380a7194188..5bd4ce597b2 100644
--- a/apps/files_sharing/openapi.json
+++ b/apps/files_sharing/openapi.json
@@ -700,7 +700,8 @@
                         "type": "string"
                     },
                     "url": {
-                        "type": "string"
+                        "type": "string",
+                        "nullable": true
                     }
                 }
             },
diff --git a/openapi.json b/openapi.json
index 44f46580091..8ca8e826cc0 100644
--- a/openapi.json
+++ b/openapi.json
@@ -2798,7 +2798,8 @@
                         "type": "string"
                     },
                     "url": {
-                        "type": "string"
+                        "type": "string",
+                        "nullable": true
                     }
                 }
             },