diff --git a/topics/microbiome/tutorials/visualisation-ampvis/tutorial.md b/topics/microbiome/tutorials/visualisation-ampvis/tutorial.md
index 0dd803568daa0..9cefa264f5a11 100644
--- a/topics/microbiome/tutorials/visualisation-ampvis/tutorial.md
+++ b/topics/microbiome/tutorials/visualisation-ampvis/tutorial.md
@@ -78,7 +78,7 @@ First of all you can put your data into
 - {% tool [rarefaction curve](toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_rarecurve/ampvis2_rarecurve/2.8.9+galaxy0) %}
 - a [rarefaction curve](https://usegalaxy.eu/root?tool_id=toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_rarecurve/ampvis2_rarecurve/2.8.9+galaxy0)
 
-to explore species richness. Then you can input your data into subsets and finally create:
+to explore species richness. Then you can input your data into [subsets](https://usegalaxy.eu/root?tool_id=toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_subset_samples/ampvis2_subset_samples/2.8.9+galaxy0) and finally create:
 - {% tool [heatmap](toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_heatmap/ampvis2_heatmap/2.8.9+galaxy0) %}
 - a [heatmap](https://usegalaxy.eu/root?tool_id=toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_heatmap/ampvis2_heatmap/2.8.9+galaxy0)
 -  {% tool [boxplot](toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_boxplot/ampvis2_boxplot/2.8.9+galaxy0) %}
@@ -87,6 +87,7 @@ to explore species richness. Then you can input your data into subsets and final
 - an [ordination plot](https://usegalaxy.eu/root?tool_id=toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_ordinate/ampvis2_ordinate/2.8.9+galaxy0)
 - {% tool [timeseries plot](toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_timeseries/ampvis2_timeseries/2.8.9+galaxy0) %}
 - a [timeseries plot](https://usegalaxy.eu/root?tool_id=toolshed.g2.bx.psu.edu/repos/iuc/ampvis2_timeseries/ampvis2_timeseries/2.8.9+galaxy0)
+
 Most of these visualisation methods are described in 
 [Introduction to ampvis2](https://kasperskytte.github.io/ampvis2/articles/ampvis2.html#heatmap).
 ![overview of visualisation methods](./images/overview.png