diff --git a/src/gentropy/config.py b/src/gentropy/config.py
index c56a9dfb3..3a67e7868 100644
--- a/src/gentropy/config.py
+++ b/src/gentropy/config.py
@@ -36,7 +36,6 @@ class ColocalisationConfig(StepConfig):
     """Colocalisation step configuration."""
 
     credible_set_path: str = MISSING
-    study_index_path: str = MISSING
     coloc_path: str = MISSING
     colocalisation_method: str = MISSING
     _target_: str = "gentropy.colocalisation.ColocalisationStep"