diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/XVerExtensionManager.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/XVerExtensionManager.java
index ddf283329..5d7a69a4f 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/XVerExtensionManager.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/XVerExtensionManager.java
@@ -67,6 +67,9 @@ public class XVerExtensionManager {
     }
     JsonObject root = lists.get(v);
     JsonObject path = root.getAsJsonObject(e);
+    if (path == null) {
+      path = root.getAsJsonObject(e+"[x]");      
+    }
     if (path == null) {
       return XVerExtensionStatus.Unknown;
     }
@@ -90,6 +93,9 @@ public class XVerExtensionManager {
     String e = url.substring(54);
     JsonObject root = lists.get(verSource);
     JsonObject path = root.getAsJsonObject(e);
+    if (path == null) {
+      path = root.getAsJsonObject(e+"[x]");
+    }
     
     StructureDefinition sd = new StructureDefinition();
     sd.setUserData(XVER_EXT_MARKER, "true");