diff --git a/testing-framework/core/src/scenario/cfgsync.rs b/testing-framework/core/src/scenario/cfgsync.rs
index 60f3656..9fa1bb5 100644
--- a/testing-framework/core/src/scenario/cfgsync.rs
+++ b/testing-framework/core/src/scenario/cfgsync.rs
@@ -90,7 +90,9 @@ pub fn apply_topology_overrides(
     cfg.old_blobs_check_interval = da.old_blobs_check_interval;
     cfg.blobs_validity_duration = da.blobs_validity_duration;
     cfg.global_params_path = if use_kzg_mount {
-        "/kzgrs_test_params/kzgrs_test_params".into()
+        // Compose mounts the bundle at /kzgrs_test_params; the proving key lives under
+        // pol/.
+        "/kzgrs_test_params/pol/proving_key.zkey".into()
     } else {
         da.global_params_path.clone()
     };