diff --git a/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/join/NestedLoopJoin.java b/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/join/NestedLoopJoin.java
index ba68caa..dd985d3 100644
--- a/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/join/NestedLoopJoin.java
+++ b/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/join/NestedLoopJoin.java
@@ -130,7 +130,7 @@
     }
 
     public void closeJoin(IFrameWriter writer) throws HyracksDataException {
-        for (int i=0; i<currentMemSize; i++) {
+        for (int i = 0; i < currentMemSize; i++) {
             ByteBuffer outBuffer = outBuffers.get(i);
             runFileReader = runFileWriter.createReader();
             runFileReader.open();