diff --git a/Wolf-tutorial-with-the-OBITools3.md b/Wolf-tutorial-with-the-OBITools3.md
index dfdf821..ba68f59 100644
--- a/Wolf-tutorial-with-the-OBITools3.md
+++ b/Wolf-tutorial-with-the-OBITools3.md
@@ -23,7 +23,7 @@ And unzip it:
 
 3. Import the [ngsfilter file](https://pythonhosted.org/OBITools/scripts/ngsfilter.html) describing the primers and tags used for each sample:
 
-		obi import --ngsfilter wolf_tutorial/wolf_diet_ngsfilter.txt wolf/ngsfile
+		obi import --ngsfilter-input wolf_tutorial/wolf_diet_ngsfilter.txt wolf/ngsfile
 
 4. Check what is in the DMS: