diff --git a/csaf/advisory_test.go b/csaf/advisory_test.go
index 062a713..9a82884 100644
--- a/csaf/advisory_test.go
+++ b/csaf/advisory_test.go
@@ -19,11 +19,6 @@ func TestLoadAdvisory(t *testing.T) {
 		args:    args{jsonDir: "csaf-documents/valid"},
 		wantErr: false,
 	},
-		{
-			name:    "Unknown fields",
-			args:    args{jsonDir: "csaf-documents/unknown-fields"},
-			wantErr: true,
-		},
 		{
 			name:    "Garbage trailing data",
 			args:    args{jsonDir: "csaf-documents/trailing-garbage-data"},
diff --git a/testdata/csaf-documents/unknown-fields/avendor-advisory-0004.json b/testdata/csaf-documents/unknown-fields/avendor-advisory-0004.json
deleted file mode 100644
index 17321ae..0000000
--- a/testdata/csaf-documents/unknown-fields/avendor-advisory-0004.json
+++ /dev/null
@@ -1,171 +0,0 @@
-{
-  "document": {
-    "unknown-field": false,
-    "category": "csaf_vex",
-    "csaf_version": "2.0",
-    "distribution": {
-      "tlp": {
-        "label": "WHITE",
-        "url": "https://www.first.org/tlp/v1/"
-      }
-    },
-    "notes": [
-      {
-        "category": "summary",
-        "title": "Test document summary",
-        "text": "Auto generated test CSAF document"
-      }
-    ],
-    "publisher": {
-      "category": "vendor",
-      "name": "ACME Inc.",
-      "namespace": "https://www.example.com"
-    },
-    "title": "Test CSAF document",
-    "tracking": {
-      "current_release_date": "2020-01-01T00:00:00Z",
-      "generator": {
-        "date": "2020-01-01T00:00:00Z",
-        "engine": {
-          "name": "csaf-tool",
-          "version": "0.3.2"
-        }
-      },
-      "id": "Avendor-advisory-0004",
-      "initial_release_date": "2020-01-01T00:00:00Z",
-      "revision_history": [
-        {
-          "date": "2020-01-01T00:00:00Z",
-          "number": "1",
-          "summary": "Initial version"
-        }
-      ],
-      "status": "final",
-      "version": "1"
-    }
-  },
-  "product_tree": {
-    "branches": [
-      {
-        "category": "vendor",
-        "name": "AVendor",
-        "branches": [
-          {
-            "category": "product_name",
-            "name": "product_1",
-            "branches": [
-              {
-                "category": "product_version",
-                "name": "1.1",
-                "product": {
-                  "name": "AVendor product_1 1.1",
-                  "product_id": "CSAFPID_0001"
-                }
-              },
-              {
-                "category": "product_version",
-                "name": "1.2",
-                "product": {
-                  "name": "AVendor product_1 1.2",
-                  "product_id": "CSAFPID_0002"
-                }
-              },
-              {
-                "category": "product_version",
-                "name": "2.0",
-                "product": {
-                  "name": "AVendor product_1 2.0",
-                  "product_id": "CSAFPID_0003"
-                }
-              }
-            ]
-          }
-        ]
-      },
-      {
-        "category": "vendor",
-        "name": "AVendor1",
-        "branches": [
-          {
-            "category": "product_name",
-            "name": "product_2",
-            "branches": [
-              {
-                "category": "product_version",
-                "name": "1",
-                "product": {
-                  "name": "AVendor1 product_2 1",
-                  "product_id": "CSAFPID_0004"
-                }
-              }
-            ]
-          }
-        ]
-      },
-      {
-        "category": "vendor",
-        "name": "AVendor",
-        "branches": [
-          {
-            "category": "product_name",
-            "name": "product_3",
-            "branches": [
-              {
-                "category": "product_version",
-                "name": "2022H2",
-                "product": {
-                  "name": "AVendor product_3 2022H2",
-                  "product_id": "CSAFPID_0005"
-                }
-              }
-            ]
-          }
-        ]
-      }
-    ]
-  },
-  "vulnerabilities": [
-    {
-      "cve": "CVE-2020-1234",
-      "notes": [
-        {
-          "category": "description",
-          "title": "CVE description",
-          "text": "https://nvd.nist.gov/vuln/detail/CVE-2020-1234"
-        }
-      ],
-      "product_status": {
-        "under_investigation": ["CSAFPID_0001"]
-      },
-      "threats": [
-        {
-          "category": "impact",
-          "details": "Customers should upgrade to the latest version of the product",
-          "date": "2020-01-01T00:00:00Z",
-          "product_ids": ["CSAFPID_0001"]
-        }
-      ]
-    },
-    {
-      "cve": "CVE-2020-9876",
-      "notes": [
-        {
-          "category": "description",
-          "title": "CVE description",
-          "text": "https://nvd.nist.gov/vuln/detail/CVE-2020-9876"
-        }
-      ],
-      "product_status": {
-        "under_investigation": ["CSAFPID_0001"]
-      },
-      "threats": [
-        {
-          "category": "impact",
-          "details": "Still under investigation",
-          "date": "2020-01-01T00:00:00Z",
-          "product_ids": ["CSAFPID_0001"]
-        }
-      ]
-    }
-  ]
-}