diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
index 80c89a3fba5f95..03735c7511b23f 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
@@ -508,8 +508,6 @@ public class SessionVariable implements Serializable, Writable {
 
     public static final String TRACE_NEREIDS = "trace_nereids";
 
-    public static final String PLAN_NEREIDS_DUMP = "plan_nereids_dump";
-
     public static final String DUMP_NEREIDS_MEMO = "dump_nereids_memo";
 
     // fix replica to query. If num = 1, query the smallest replica, if 2 is the second smallest replica.
@@ -2209,8 +2207,10 @@ public boolean isEnableHboNonStrictMatchingMode() {
     @VariableMgr.VarAttr(name = TRACE_NEREIDS)
     public boolean traceNereids = false;
 
-    @VariableMgr.VarAttr(name = PLAN_NEREIDS_DUMP)
-    public boolean planNereidsDump = false;
+    // Internal state, not a session variable: it is turned on only by MinidumpUtils while replaying
+    // a minidump file (PLAY '<dumpfile>'), where tables and statistics come from the dump instead of
+    // the catalog. It is intentionally not settable through SET, not forwarded and not serialized.
+    private boolean planNereidsDump = false;
 
     // If set to true, all query will be executed without returning result
     @VariableMgr.VarAttr(name = DRY_RUN_QUERY, needForward = true)