diff --git a/validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDStructElem.java b/validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDStructElem.java
index 83646f352..3ca782504 100644
--- a/validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDStructElem.java
+++ b/validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDStructElem.java
@@ -127,7 +127,8 @@ public String getparentStandardType() {
 	public String getnamespaceAndTag() {
 		StructureType type = ((org.verapdf.pd.structure.PDStructElem)simplePDObject).getStructureType();
 		if (type != null) {
-			return (type.getType() != null ? type.getType() : "null") + ":" + (type.getNameSpaceURI() != null ? type.getNameSpaceURI() : "null");
+			return String.format("%s:%s", type.getNameSpaceURI() != null ? type.getNameSpaceURI() : "null", 
+					type.getType() != null ? type.getType() : "null");
 		}
 		return null;
 	}