diff --git a/core-plugins/src/main/java/io/cdap/plugin/batch/source/ExcelInputFormat.java b/core-plugins/src/main/java/io/cdap/plugin/batch/source/ExcelInputFormat.java
index 3418782e3..d5f0ef5d1 100644
--- a/core-plugins/src/main/java/io/cdap/plugin/batch/source/ExcelInputFormat.java
+++ b/core-plugins/src/main/java/io/cdap/plugin/batch/source/ExcelInputFormat.java
@@ -27,6 +27,7 @@
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.mapreduce.InputSplit;
 import org.apache.hadoop.mapreduce.Job;
+import org.apache.hadoop.mapreduce.JobContext;
 import org.apache.hadoop.mapreduce.RecordReader;
 import org.apache.hadoop.mapreduce.TaskAttemptContext;
 import org.apache.hadoop.mapreduce.lib.input.FileSplit;
@@ -71,6 +72,11 @@ public RecordReader<LongWritable, Text> createRecordReader(InputSplit split, Tas
     return new ExcelRecordReader();
   }
 
+  @Override
+  public boolean isSplitable(JobContext context, Path file) {
+    return false;
+  }
+
   public static void setConfigurations(Job job, String filePattern, String sheet, boolean reprocess,
                                        String sheetValue, String columnList, boolean skipFirstRow,
                                        String terminateIfEmptyRow, String rowLimit, String ifErrorRecord,