diff --git a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/cos/PBCosFileSpecification.java b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/cos/PBCosFileSpecification.java
index ac709d51..0f5a7190 100644
--- a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/cos/PBCosFileSpecification.java
+++ b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/cos/PBCosFileSpecification.java
@@ -92,6 +92,11 @@ public Boolean getcontainsEF() {
 				((COSDictionary) this.baseObject).containsKey(COSName.EF);
 	}
 
+	@Override
+	public Boolean getcontainsDesc() {
+		return null;
+	}
+
 	@Override
 	public List<? extends Object> getLinkedObjects(String link) {
 		if (EF.equals(link)) {
diff --git a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/pboxse/PBoxSEForm.java b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/pboxse/PBoxSEForm.java
index 232bf30e..37442f03 100644
--- a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/pboxse/PBoxSEForm.java
+++ b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/pboxse/PBoxSEForm.java
@@ -42,4 +42,9 @@ public String getroleAttribute() {
     public Boolean gethasOneInteractiveChild() {
         return false;
     }
+
+    @Override
+    public Long getwidgetAnnotsCount() {
+        return null;
+    }
 }