diff --git a/processing/src/main/java/org/apache/druid/segment/writeout/FileWriteOutBytes.java b/processing/src/main/java/org/apache/druid/segment/writeout/FileWriteOutBytes.java
index c9bf6f4669a..3c602631e92 100644
--- a/processing/src/main/java/org/apache/druid/segment/writeout/FileWriteOutBytes.java
+++ b/processing/src/main/java/org/apache/druid/segment/writeout/FileWriteOutBytes.java
@@ -108,7 +108,7 @@ final class FileWriteOutBytes extends WriteOutBytes
   }
 
   @Override
-  public long size() throws IOException
+  public long size()
   {
     return writeOutBytes;
   }