diff --git a/src/black_holes/EAGLE/black_holes_iact.h b/src/black_holes/EAGLE/black_holes_iact.h
index a338caca099d44212ff56edf6373e9bb46938dbb..30186f892e1eaf9b34e07ddcc5a419312696a78b 100644
--- a/src/black_holes/EAGLE/black_holes_iact.h
+++ b/src/black_holes/EAGLE/black_holes_iact.h
@@ -124,7 +124,7 @@ runner_iact_nonsym_bh_gas_density(
       error(
           "Invalid denominator for BH particle %lld and gas particle "
           "%lld in Bondi rate calculation.",
-          bp->id, pj->id);
+          bi->id, pj->id);
 #endif
     const double denominator_inv = 1. / sqrt(denominator2);