diff --git a/src/main/java/io/xlate/edi/internal/schema/SchemaReaderBase.java b/src/main/java/io/xlate/edi/internal/schema/SchemaReaderBase.java
index 89dda21c..39acaa65 100644
--- a/src/main/java/io/xlate/edi/internal/schema/SchemaReaderBase.java
+++ b/src/main/java/io/xlate/edi/internal/schema/SchemaReaderBase.java
@@ -9,6 +9,7 @@
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -517,7 +518,7 @@ ElementType readSimpleType(XMLStreamReader reader) throws XMLStreamException {
     }
 
     Set<String> readEnumerationValues(XMLStreamReader reader) throws XMLStreamException {
-        Set<String> values = new HashSet<>();
+        Set<String> values = new LinkedHashSet<>();
         QName element;
         boolean enumerationEnd = false;