diff --git a/config/config.yaml b/config/config.yaml
index 9424f8c..538281f 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -39,7 +39,7 @@ circle_filtering:
   min_circle_score: 100
   min_split_reads: 1
   min_discordant_read_pairs: 1
-  max_uncovered fraction: 0.9
+  max_uncovered_fraction: 0.9
   min_mean_coverage: 2.0
   min_circle_length: 500
   max_circle_length: 80000000
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