diff --git a/SofaRegressionProgram.py b/SofaRegressionProgram.py
index 691d6ab..15e37ac 100644
--- a/SofaRegressionProgram.py
+++ b/SofaRegressionProgram.py
@@ -60,7 +60,7 @@ def write_sets_references(self, id_set=0):
     def write_all_sets_references(self):
         nbr_sets = len(self.scene_sets)
 
-        pbar_sets = pbh.ProgressBarHandler(total=self.nbr_sets, disable=args.disable_progress_bar)
+        pbar_sets = pbh.ProgressBarHandler(total=nbr_sets, disable=self.disable_progress_bar)
         pbar_sets.set_description("Write All sets")
 
         nbr_scenes = 0
@@ -145,6 +145,12 @@ def make_parser():
         help='If set, will display more information',
         action='store_true'
     )
+    parser.add_argument(
+        "--quiet",
+        dest="quiet",
+        help='If set, will only print error messages and results.',
+        action='store_true'
+    )
     parser.add_argument(
         "--legacy-regression",
         dest="legacy_mode",
@@ -185,11 +191,25 @@ def make_parser():
         reg_prog.replay_references(replayId)
         sys.exit()
 
+    old_fd = os.dup(1)
+    if args.quiet:
+        # Save and redirect
+        sys.stdout.flush()
+        devnull = os.open(os.devnull, os.O_WRONLY)
+        os.dup2(devnull, 1)
+        os.close(devnull)
+
     if args.write_mode:
         nbr_scenes = reg_prog.write_all_sets_references()
     else:
         nbr_scenes = reg_prog.compare_all_sets_references()
 
+    if args.quiet:
+        # Restore
+        sys.stdout.flush()
+        os.dup2(old_fd, 1)
+        os.close(old_fd)
+
     np.set_printoptions(legacy='1.25') # revert printing floating-point type in numpy (concretely remove np.array when displaying a list of np.float)
     
     print ("### Number of sets Done:  " + str(len(reg_prog.scene_sets)))
diff --git a/tools/RegressionSceneList.py b/tools/RegressionSceneList.py
index d370b31..6c8c196 100644
--- a/tools/RegressionSceneList.py
+++ b/tools/RegressionSceneList.py
@@ -109,7 +109,7 @@ def write_references(self, id_scene, print_log = False):
     def write_all_references(self):
         nbr_scenes = len(self.scenes_data_sets)
 
-        pbar_scenes = pbh.ProgressBarHandler(total=self.nbr_scenes, disable=self.disable_progress_bar)
+        pbar_scenes = pbh.ProgressBarHandler(total=nbr_scenes, disable=self.disable_progress_bar)
         pbar_scenes.set_description("Write all scenes from: " + self.file_path)
         
         for i in range(0, nbr_scenes):