diff --git a/app/helpers/collections_helper.rb b/app/helpers/collections_helper.rb
index 916564aac9..f1c8ca4d60 100644
--- a/app/helpers/collections_helper.rb
+++ b/app/helpers/collections_helper.rb
@@ -33,16 +33,7 @@ def get_collections_labels(collections, main_uri = '')
       end
     end
 
-    collections_labels.sort_by! do |s|
-      pref_label = s['prefLabel']
-
-      if pref_label.is_a? String
-        pref_label
-      else
-        pref_label.last
-      end
-    end
-
+    collections_labels = sorted_labels(collections_labels)
     collections_labels.unshift selected_label if selected_label
     [collections_labels, selected_label]
   end
diff --git a/app/helpers/multi_languages_helper.rb b/app/helpers/multi_languages_helper.rb
index 5667f5891c..c52f7860d1 100644
--- a/app/helpers/multi_languages_helper.rb
+++ b/app/helpers/multi_languages_helper.rb
@@ -32,7 +32,7 @@ def select_language_label(concept_label, platform_languages = %i[en fr])
   end
 
   def main_language_label(label)
-    select_language_label(label).last
+    select_language_label(label)&.last
   end
 
   def display_in_multiple_languages(label)
diff --git a/app/helpers/schemes_helper.rb b/app/helpers/schemes_helper.rb
index bef7cebaad..f9c67d1324 100644
--- a/app/helpers/schemes_helper.rb
+++ b/app/helpers/schemes_helper.rb
@@ -34,10 +34,7 @@ def get_schemes_labels(schemes, main_uri)
     end
 
     schemes_labels = sorted_labels(schemes_labels)
-
-    if selected_label
-      schemes_labels.unshift selected_label
-    end
+    schemes_labels.unshift selected_label if selected_label
     [schemes_labels, selected_label]
   end