diff --git a/src/common/backend/nodes/outfuncs.cpp b/src/common/backend/nodes/outfuncs.cpp
index 5991c615b20dc3ae589dc432aca9ee2938254bcc..4c9522f598e6b7c1351b0d9ddfd80bcf240e52e1 100755
--- a/src/common/backend/nodes/outfuncs.cpp
+++ b/src/common/backend/nodes/outfuncs.cpp
@@ -578,7 +578,7 @@ static void _outPlannedStmt(StringInfo str, PlannedStmt* node)
     WRITE_INT_FIELD(gather_count);
     WRITE_INT_FIELD(num_nodes);
 
-    if (t_thrd.proc->workingVersionNum < 92097 || node->num_streams > 0) {
+    if ((t_thrd.proc->workingVersionNum < 92097 || node->num_streams > 0) && node->nodesDefinition != NULL) {
 	    for (int i = 0; i < node->num_nodes; i++) {
 	        /* Write the field name only one time and just append the value of each field */
 	        appendStringInfo(str, " :nodesDefinition[%d]", i);