diff --git a/tools/crispr_studio/crispr_studio.xml b/tools/crispr_studio/crispr_studio.xml
index d1c6ac40af8..dff3481b3ef 100644
--- a/tools/crispr_studio/crispr_studio.xml
+++ b/tools/crispr_studio/crispr_studio.xml
@@ -54,7 +54,7 @@
                  <param name="isolate_list" type="data" format="txt" optional="true" label="List of Isolates to show" help="Generate the figure with the subset of isolates listed in the file"/>
             </when>
         </conditional>
-        <param name="n" argument="-n" truevalue="-n" falsevalue="" type="boolean" label="Show the size of the spacers over the boxed diamonds?" help="We recommend to use this option only for experimental analysis of the data"/>
+        <param argument="-n" truevalue="-n" falsevalue="" type="boolean" label="Show the size of the spacers over the boxed diamonds?" help="We recommend to use this option only for experimental analysis of the data"/>
         <param argument="-f" truevalue="-f" falsevalue="" type="boolean" label="Skip the verification of the fasta file generated from the GFF file?" help="The verification is mainly based on the length of the spacer sequences. If a spacer is 1.5 time shorter or longer than the average spacer size of the dataset, a warning is raised and the script stops (Verification is ran by default)."/>
         <param name="cut_off" type="integer" optional="true" label="Score cutoff for pairing of the spacers"/>
         <param argument="-gU" truevalue="-gU" falsevalue="" type="boolean" label="Gray out unique?" help="The unique spacers will be grayed"/>