diff --git a/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/prettyprint/LogicalOperatorPrettyPrintVisitorJson.java b/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/prettyprint/LogicalOperatorPrettyPrintVisitorJson.java
index 1076eb5..8acf08b 100644
--- a/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/prettyprint/LogicalOperatorPrettyPrintVisitorJson.java
+++ b/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/prettyprint/LogicalOperatorPrettyPrintVisitorJson.java
@@ -544,9 +544,9 @@
         addIndent(indent).append("\"from-record\": \"")
                 .append(op.getPayloadExpression().getValue().accept(exprVisitor, indent) + "\"");
         if (op.getAdditionalNonFilteringExpressions() != null) {
-            buffer.append(",\n\"meta\": \"");
+            buffer.append(",\n\"meta\": {");
             pprintExprList(op.getAdditionalNonFilteringExpressions(), 0);
-            buffer.append("\"");
+            buffer.append("}");
         }
         buffer.append(",\n");
         addIndent(indent).append("\"partitioned-by\": {");