diff --git a/definitions/3.0.0/multiFormatSchema.json b/definitions/3.0.0/multiFormatSchema.json
index ee96b828..0a5a8051 100644
--- a/definitions/3.0.0/multiFormatSchema.json
+++ b/definitions/3.0.0/multiFormatSchema.json
@@ -131,6 +131,7 @@
             ]
           },
           "schema": {
+            "not": {"required": ["$ref"]},
             "$ref": "http://asyncapi.com/definitions/3.0.0/openapiSchema_3_0.json"
           }
         }
@@ -164,6 +165,7 @@
             ]
           },
           "schema": {
+            "not": {"required": ["$ref"]},
             "$ref": "http://asyncapi.com/definitions/3.0.0/avroSchema_v1.json"
           }
         }
diff --git a/schemas/3.0.0-without-$id.json b/schemas/3.0.0-without-$id.json
index b2220e0e..5769341d 100644
--- a/schemas/3.0.0-without-$id.json
+++ b/schemas/3.0.0-without-$id.json
@@ -2839,6 +2839,11 @@
                                 ]
                             },
                             "schema": {
+                                "not": {
+                                    "required": [
+                                        "$ref"
+                                    ]
+                                },
                                 "$ref": "#/definitions/openapiSchema_3_0"
                             }
                         }
@@ -2879,6 +2884,11 @@
                                 ]
                             },
                             "schema": {
+                                "not": {
+                                    "required": [
+                                        "$ref"
+                                    ]
+                                },
                                 "$ref": "#/definitions/avroSchema_v1"
                             }
                         }
diff --git a/schemas/3.0.0.json b/schemas/3.0.0.json
index 5b83c4e3..915cc614 100644
--- a/schemas/3.0.0.json
+++ b/schemas/3.0.0.json
@@ -2890,6 +2890,11 @@
                                 ]
                             },
                             "schema": {
+                                "not": {
+                                    "required": [
+                                        "$ref"
+                                    ]
+                                },
                                 "$ref": "http://asyncapi.com/definitions/3.0.0/openapiSchema_3_0.json"
                             }
                         }
@@ -2930,6 +2935,11 @@
                                 ]
                             },
                             "schema": {
+                                "not": {
+                                    "required": [
+                                        "$ref"
+                                    ]
+                                },
                                 "$ref": "http://asyncapi.com/definitions/3.0.0/avroSchema_v1.json"
                             }
                         }