diff --git a/tools/sfold/sfold.xml b/tools/sfold/sfold.xml
index 06ea482193c..ab41dd1cd33 100644
--- a/tools/sfold/sfold.xml
+++ b/tools/sfold/sfold.xml
@@ -43,7 +43,7 @@
             <option value="3">Both</option>
         </param>
         <param name="output_selector" type="select" multiple="true" optional="true" display="checkboxes" label="Output options">
-            <option value="ct">Output ct files</option>
+            <option value="ct" selected="true">Output ct files</option>
             <option value="bp">Output bp files</option>
             <option value="clusters">Output cluster files</option>
         </param>