diff --git a/src/cabinetry/fit/__init__.py b/src/cabinetry/fit/__init__.py
index b4118da0..604d810e 100644
--- a/src/cabinetry/fit/__init__.py
+++ b/src/cabinetry/fit/__init__.py
@@ -588,6 +588,10 @@ def ranking(
     init_pars = init_pars or model.config.suggested_init()
     fix_pars = fix_pars or model.config.suggested_fixed()
 
+    par_bounds = par_bounds or [
+        tuple(bound) for bound in model.config.suggested_bounds()
+    ]
+
     all_impacts = []
     for i_par, label in enumerate(labels):
         if i_par == poi_index:
@@ -613,6 +617,10 @@ def ranking(
                 log.debug(f"impact of {label} is zero, skipping fit")
                 parameter_impacts.append(0.0)
             else:
+                if not par_bounds[i_par][0] <= np_val <= par_bounds[i_par][1]:
+                    np_val = min(
+                        max(np_val, par_bounds[i_par][0]), par_bounds[i_par][1]
+                    )
                 init_pars_ranking = init_pars.copy()
                 init_pars_ranking[i_par] = np_val  # value of current nuisance parameter
                 fit_results_ranking = _fit_model(