diff --git a/examples/speechcommand_v1/s0/local/data_download.sh b/examples/speechcommand_v1/s0/local/data_download.sh
index 0fd3a64..4b1000a 100755
--- a/examples/speechcommand_v1/s0/local/data_download.sh
+++ b/examples/speechcommand_v1/s0/local/data_download.sh
@@ -14,7 +14,7 @@ url=http://download.tensorflow.org/data/$file_name
 mkdir -p $data_dir
 if [ ! -f $data_dir/$file_name ]; then
     echo "downloading $url..."
-    wget -O $data_dir/$file_name $url 
+    wget -O $data_dir/$file_name $url
 else
     echo "$file_name exist in $data_dir, skip download it"
 fi