diff --git a/tools/filters/wig_to_bigwig.xml b/tools/filters/wig_to_bigwig.xml
index 310c6c231a8..50431e6e843 100644
--- a/tools/filters/wig_to_bigwig.xml
+++ b/tools/filters/wig_to_bigwig.xml
@@ -1,6 +1,6 @@
 <tool id="wig_to_bigWig" name="Wig to bigWig" version="1.0.0">
   <description>converter</description>
-  <command>grep -v "^track" $input1 | wigToBigWig stdin $chromInfo $out_file1 -blockSize=$blockSize -itemsPerSlot=$itemsPerSlot $clip $unc</command>
+  <command>grep -v "^track" $input1 | wigToBigWig stdin $chromInfo $out_file1 -blockSize=$blockSize -itemsPerSlot=$itemsPerSlot $clip $unc 2&gt;&amp;1 || echo "Error running wigToBigWig." >&amp;2</command>
   <requirements>
     <requirement type="binary">wigToBigWig</requirement>
   </requirements>