diff --git a/packages/squiggle-lang/.prettierignore b/packages/squiggle-lang/.prettierignore
index 75fd1e23..f850d9fd 100644
--- a/packages/squiggle-lang/.prettierignore
+++ b/packages/squiggle-lang/.prettierignore
@@ -3,7 +3,7 @@ lib
 *.bs.js
 *.gen.tsx
 .nyc_output/
-_coverage/
+coverage/
 .cache/
 Reducer_Peggy_GeneratedParser.js
 ReducerProject_IncludeParser.js