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 661e0cf..64a5e1a 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
@@ -954,8 +954,9 @@
     }
 
     private void writeBuildSide(AbstractBinaryJoinOperator op) throws IOException {
-        int buildInputIndex = printInputsInReverse(op) ? 0 : 1;
-        jsonGenerator.writeNumberField("build-side", buildInputIndex);
+        if (isHashJoin(op)) {
+            jsonGenerator.writeNumberField("build-side", 0);
+        }
     }
 
     private static boolean printInputsInReverse(AbstractLogicalOperator op) {