diff --git a/tools/maaslin2/maaslin2.xml b/tools/maaslin2/maaslin2.xml
index ea8e471f49e..51c1fdee756 100644
--- a/tools/maaslin2/maaslin2.xml
+++ b/tools/maaslin2/maaslin2.xml
@@ -88,12 +88,12 @@ cd outputFolder && mkdir -p figures/ && cp *.pdf figures
                 <option value="ZINB">ZINB</option>
             </param>
             <param argument="--correction" type="select" value="BH" multiple="true" optional="true" label="Correction" help="The correction method for computing  the q-value">
-            <option value="holm">holm</option>
-            <option value="hochberg">hochberg</option>
-            <option value="hommel">hommel</option>
-            <option value="bonferroni">bonferroni</option>
-            <option value="BH">BH</option>
-            <option value="BY">BY</option>
+                 <option value="holm">holm</option>
+                 <option value="hochberg">hochberg</option>
+                 <option value="hommel">hommel</option>
+                 <option value="bonferroni">bonferroni</option>
+                 <option value="BH">BH</option>
+                 <option value="BY">BY</option>
             </param>
             <param argument="--standardize" type="boolean" truevalue="--standardize TRUE" falsevalue="--standardize FALSE" checked="true" label="Apply z-score so continuous metadata are on  the same scale"/>
         </section>