1 files changed, 2 insertions, 2 deletions
diff --git a/core/src/main/java/org/elasticsearch/index/mapper/internal/FieldNamesFieldMapper.java b/core/src/main/java/org/elasticsearch/index/mapper/internal/FieldNamesFieldMapper.java
index 17d1c2b9f0..03ebcb9fe9 100644
--- a/core/src/main/java/org/elasticsearch/index/mapper/internal/FieldNamesFieldMapper.java
+++ b/core/src/main/java/org/elasticsearch/index/mapper/internal/FieldNamesFieldMapper.java
@@ -40,7 +40,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 
-import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeBooleanValue;
+import static org.elasticsearch.common.xcontent.support.XContentMapValues.lenientNodeBooleanValue;
 
 /**
  * A mapper that indexes the field names of a document under <code>_field_names</code>. This mapper is typically useful in order
@@ -112,7 +112,7 @@ public class FieldNamesFieldMapper extends MetadataFieldMapper {
                 String fieldName = Strings.toUnderscoreCase(entry.getKey());
                 Object fieldNode = entry.getValue();
                 if (fieldName.equals("enabled")) {
-                    builder.enabled(nodeBooleanValue(fieldNode));
+                    builder.enabled(lenientNodeBooleanValue(fieldNode));
                     iterator.remove();
                 }
             }