diff --git a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java
index 2c467206..2a0a24f8 100644
--- a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java
+++ b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java
@@ -217,10 +217,13 @@ public static String getStructureElementStandardType(COSDictionary pdStructElem,
 	}
 
 	@Override
-	public Boolean getisRemappedStandardType() {
+	public String getremappedStandardType() {
 		COSBase type = ((COSDictionary) this.simplePDObject).getDictionaryObject(COSName.S);
 		if (type instanceof COSName) {
-			return this.roleMapHelper.isRemappedStandardType(((COSName) type).getName());
+			String value = ((COSName) type).getName();
+			if (this.roleMapHelper.isRemappedStandardType(value)) {
+				return value;
+			}
 		}
 		return null;
 	}
diff --git a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/pboxse/PBoxSENonStandard.java b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/pboxse/PBoxSENonStandard.java
index 05c15cd5..c9d05365 100644
--- a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/pboxse/PBoxSENonStandard.java
+++ b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/pboxse/PBoxSENonStandard.java
@@ -31,4 +31,9 @@ public class PBoxSENonStandard extends PBoxSEGeneral implements SENonStandard {
     public PBoxSENonStandard(COSDictionary structElemDictionary, TaggedPDFRoleMapHelper roleMapHelper, String standardType) {
         super(structElemDictionary, roleMapHelper, standardType, NON_STANDARD_STRUCTURE_ELEMENT_TYPE);
     }
+
+    @Override
+    public Boolean getisNotMappedToStandardType() {
+        return null;
+    }
 }