diff --git a/examples/docking-protein-protein/docking-protein-protein-cltsel.cfg b/examples/docking-protein-protein/docking-protein-protein-cltsel.cfg
index d438a9e37..27e641dec 100644
--- a/examples/docking-protein-protein/docking-protein-protein-cltsel.cfg
+++ b/examples/docking-protein-protein/docking-protein-protein-cltsel.cfg
@@ -36,12 +36,17 @@ sampling = 100
 noecv = true
 
 [clustfcc]
+threshold=1
 
 [seletopclusts]
-# select the best 4 clusters
-top_cluster = [1, 2, 3, 4]
-# select the best 4 models of each cluster
-top_models = 4
+## select the best 4 clusters
+# top_cluster = [1, 2, 3, 4]
+## select all the clusters
+top_cluster = []
+## select the best 4 models of each cluster
+# top_models = 4
+##select all the models
+top_models = nan
 
 [caprieval]
 reference_fname = "data/e2a-hpr_1GGR.pdb"
diff --git a/src/haddock/modules/analysis/seletopclusts/__init__.py b/src/haddock/modules/analysis/seletopclusts/__init__.py
index 5342799a0..04b386a5c 100644
--- a/src/haddock/modules/analysis/seletopclusts/__init__.py
+++ b/src/haddock/modules/analysis/seletopclusts/__init__.py
@@ -1,4 +1,5 @@
 """HADDOCK3 module to select a top cluster/model."""
+import math
 from pathlib import Path
 
 from haddock.libs.libontology import ModuleIO
@@ -14,13 +15,8 @@ class HaddockModule(BaseHaddockModule):
 
     name = RECIPE_PATH.name
 
-    def __init__(
-            self,
-            order,
-            path,
-            *ignore,
-            init_params=DEFAULT_CONFIG,
-            **everything):
+    def __init__(self, order, path, *ignore, init_params=DEFAULT_CONFIG,
+                 **everything):
         super().__init__(order, path, init_params)
 
     @classmethod
@@ -30,24 +26,44 @@ def confirm_installation(cls):
 
     def _run(self):
         """Execute the module's protocol."""
+        if self.params["top_models"] <= 0:
+            _msg = "top_models must be either > 0 or nan."
+            self.finish_with_error(_msg)
+
+        if not isinstance(self.params["top_cluster"], list):
+            _msg = "top_cluster must be a list, it can be an empty one."
+            self.finish_with_error(_msg)
+
         models_to_select = self.previous_io.retrieve_models()
 
         # how many models should we output?
         models = []
-        for target_ranking in self.params['top_cluster']:
-            if self.params['top_models'] == 'all':
+        if not self.params["top_cluster"]:
+            target_rankings = list(set([p.clt_rank for p in models_to_select]))
+            target_rankins_str = ",".join(map(str, target_rankings))
+            self.log(f"Selecting all clusters: {target_rankins_str}")
+        else:
+            target_rankings = list(set(self.params["top_cluster"]))
+            target_rankins_str = ",".join(map(str, target_rankings))
+            self.log(f"Selecting clusters: {target_rankins_str}")
+
+        for target_ranking in target_rankings:
+            if math.isnan(self.params["top_models"]):
                 for pdb in models_to_select:
                     if pdb.clt_rank == target_ranking:
                         models.append(pdb)
             else:
-                for model_ranking in range(1, self.params['top_models'] + 1):
+                for model_ranking in range(1, self.params["top_models"] + 1):
                     for pdb in models_to_select:
-                        if (pdb.clt_rank == target_ranking
-                                and pdb.clt_model_rank == model_ranking):
+                        if (
+                                pdb.clt_rank == target_ranking
+                                and pdb.clt_model_rank == model_ranking
+                                ):
                             self.log(
                                 f"Selecting {pdb.file_name} "
                                 f"Cluster {target_ranking} "
-                                f"Model {model_ranking}")
+                                f"Model {model_ranking}"
+                                )
                             models.append(pdb)
 
         # Save module information
diff --git a/src/haddock/modules/analysis/seletopclusts/defaults.cfg b/src/haddock/modules/analysis/seletopclusts/defaults.cfg
index a62a3ba80..33eca86aa 100644
--- a/src/haddock/modules/analysis/seletopclusts/defaults.cfg
+++ b/src/haddock/modules/analysis/seletopclusts/defaults.cfg
@@ -1,2 +1,2 @@
-top_cluster = [1, 2, 3, 4]
-top_models = 4
+top_cluster = []
+top_models = nan