diff --git a/sandbox/plugins/analytics-engine/src/main/java/org/opensearch/analytics/planner/rules/OpenSearchFilterRule.java b/sandbox/plugins/analytics-engine/src/main/java/org/opensearch/analytics/planner/rules/OpenSearchFilterRule.java
index 9ed9f88bc1500..ee5b8e4650645 100644
--- a/sandbox/plugins/analytics-engine/src/main/java/org/opensearch/analytics/planner/rules/OpenSearchFilterRule.java
+++ b/sandbox/plugins/analytics-engine/src/main/java/org/opensearch/analytics/planner/rules/OpenSearchFilterRule.java
@@ -26,6 +26,7 @@
 import org.opensearch.analytics.planner.rel.OpenSearchRelNode;
 import org.opensearch.analytics.spi.DelegationType;
 import org.opensearch.analytics.spi.FieldStorageInfo;
+import org.opensearch.analytics.spi.FieldType;
 import org.opensearch.analytics.spi.ScalarFunction;
 
 import java.util.ArrayList;