diff --git a/server/src/main/java/org/opensearch/index/mapper/DefaultDerivedFieldResolver.java b/server/src/main/java/org/opensearch/index/mapper/DefaultDerivedFieldResolver.java
index 4dd17703b6f55..1e8ef4134a8e7 100644
--- a/server/src/main/java/org/opensearch/index/mapper/DefaultDerivedFieldResolver.java
+++ b/server/src/main/java/org/opensearch/index/mapper/DefaultDerivedFieldResolver.java
@@ -72,7 +72,7 @@ public Set<String> resolvePattern(String pattern) {
         Set<String> derivedFields = new HashSet<>();
         if (queryShardContext != null && queryShardContext.getMapperService() != null) {
             for (MappedFieldType fieldType : queryShardContext.getMapperService().fieldTypes()) {
-                if (Regex.simpleMatch(pattern, fieldType.name()) && fieldType instanceof DerivedFieldType) {
+                if (fieldType instanceof DerivedFieldType && Regex.simpleMatch(pattern, fieldType.name())) {
                     derivedFields.add(fieldType.name());
                 }
             }