diff --git a/presto-orc/src/main/java/com/facebook/presto/orc/reader/TimestampSelectiveStreamReader.java b/presto-orc/src/main/java/com/facebook/presto/orc/reader/TimestampSelectiveStreamReader.java
index 66422b2341b7..f83616ac730b 100644
--- a/presto-orc/src/main/java/com/facebook/presto/orc/reader/TimestampSelectiveStreamReader.java
+++ b/presto-orc/src/main/java/com/facebook/presto/orc/reader/TimestampSelectiveStreamReader.java
@@ -44,6 +44,7 @@
 import static com.facebook.presto.orc.reader.SelectiveStreamReaders.initializeOutputPositions;
 import static com.facebook.presto.orc.stream.MissingInputStreamSource.missingStreamSource;
 import static com.facebook.presto.spi.type.TimestampType.TIMESTAMP;
+import static com.google.common.base.MoreObjects.toStringHelper;
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkState;
 import static io.airlift.slice.SizeOf.sizeOf;
@@ -430,6 +431,14 @@ private void compactValues(int[] positions, int positionCount, boolean compactNu
         outputPositionCount = positionCount;
     }
 
+    @Override
+    public String toString()
+    {
+        return toStringHelper(this)
+                .addValue(streamDescriptor)
+                .toString();
+    }
+
     @Override
     public void close()
     {