diff --git a/config/config.yaml b/config/config.yaml
index d50d4d83..c5d1aadd 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -83,7 +83,8 @@ enrichment:
     # if activated, you need to provide a GMT file with gene sets of interest
     gene_sets_file: "resources/gene_sets/dummy.gmt"
     fdr_gene_set: 0.05
-    eps: 0.0
+    # minimum achievable p-value  (equivalent to the reciprocal of the number of permutations, see fgsea docs)
+    eps: 1e-50
   spia:
     # tool is only run if set to `true`
     activate: false