diff --git a/fe/fe-core/src/main/java/org/apache/doris/load/DppScheduler.java b/fe/fe-core/src/main/java/org/apache/doris/load/DppScheduler.java
index c037f25b60..f777cdfa74 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/load/DppScheduler.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/load/DppScheduler.java
@@ -552,7 +552,7 @@ public class DppScheduler {
         return String.format(ETL_OUTPUT_PATH, fsDefaultName, outputPath, dbId, loadLabel, etlOutputDir);
     }
 
-    private class InputSizeInvalidException extends LoadException {
+    private static class InputSizeInvalidException extends LoadException {
         public InputSizeInvalidException(String msg) {
             super(msg);
         }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/Coordinator.java b/fe/fe-core/src/main/java/org/apache/doris/qe/Coordinator.java
index f601faba68..48f7191531 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/Coordinator.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/Coordinator.java
@@ -2476,12 +2476,12 @@ public class Coordinator implements CoordInterface {
 
     // map from a BE host address to the per-node assigned scan ranges;
     // records scan range assignment for a single fragment
-    class FragmentScanRangeAssignment
+    static class FragmentScanRangeAssignment
             extends HashMap<TNetworkAddress, Map<Integer, List<TScanRangeParams>>> {
     }
 
     // Bucket sequence -> (scan node id -> list of TScanRangeParams)
-    class BucketSeqToScanRange extends HashMap<Integer, Map<Integer, List<TScanRangeParams>>> {
+    static class BucketSeqToScanRange extends HashMap<Integer, Map<Integer, List<TScanRangeParams>>> {
 
     }