diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/EnumYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/EnumYAMLParser.java
index dd4b295..8327acd 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/EnumYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/EnumYAMLParser.java
@@ -26,7 +26,7 @@ public EnumYAMLParser(Class<?> eClass) {
     protected BiFunctionException<IConfiguration, String, E> getLoader() {
         return (c, s) -> {
             String enumString = c.getString(s);
-            return E.valueOf(getOClass(), enumString);
+            return enumString == null ? null : E.valueOf(getOClass(), enumString.toUpperCase());
         };
     }