diff --git a/lib/redmine/scm/adapters/abstract_adapter.rb b/lib/redmine/scm/adapters/abstract_adapter.rb
index 0ad3d7f45..6edc9c9de 100644
--- a/lib/redmine/scm/adapters/abstract_adapter.rb
+++ b/lib/redmine/scm/adapters/abstract_adapter.rb
@@ -161,21 +161,31 @@ module Redmine
           path.start_with?('/') ? path : "/#{path}"
         end
 
-        def with_trailling_slash(path)
+        def with_trailing_slash(path)
           path ||= ''
           path.end_with?('/') ? path : "#{path}/"
         end
 
+        def with_trailling_slash(path)
+          ActiveSupport::Deprecation.warn 'Redmine::Scm::Adapters::AbstractAdapter#with_trailling_slash is deprecated and will be removed in Redmine 6.0. Please use #with_trailing_slash instead.'
+          with_trailing_slash(path)
+        end
+
         def without_leading_slash(path)
           path ||= ''
           path.gsub(%r{^/+}, '')
         end
 
-        def without_trailling_slash(path)
+        def without_trailing_slash(path)
           path ||= ''
           path.end_with?('/') ? path[0..-2] : path
         end
 
+        def without_trailling_slash(path)
+          ActiveSupport::Deprecation.warn 'Redmine::Scm::Adapters::AbstractAdapter#without_trailling_slash is deprecated and will be removed in Redmine 6.0. Please use #without_trailing_slash instead.'
+          without_trailing_slash(path)
+        end
+
         def valid_name?(name)
           return true if name.nil?
           return true if name.is_a?(Integer) && name > 0
diff --git a/lib/redmine/scm/adapters/filesystem_adapter.rb b/lib/redmine/scm/adapters/filesystem_adapter.rb
index 5b98d5314..550c19b92 100644
--- a/lib/redmine/scm/adapters/filesystem_adapter.rb
+++ b/lib/redmine/scm/adapters/filesystem_adapter.rb
@@ -36,7 +36,7 @@ module Redmine
 
         def initialize(url, root_url=nil, login=nil, password=nil,
                        path_encoding=nil)
-          @url = with_trailling_slash(url)
+          @url = with_trailing_slash(url)
           @path_encoding = path_encoding.blank? ? 'UTF-8' : path_encoding
         end
 
@@ -47,8 +47,8 @@ module Redmine
         def format_path_ends(path, leading=true, trailling=true)
           path = leading ? with_leading_slash(path) :
             without_leading_slash(path)
-          trailling ? with_trailling_slash(path) :
-            without_trailling_slash(path)
+          trailling ? with_trailing_slash(path) :
+            without_trailing_slash(path)
         end
 
         def info
diff --git a/lib/redmine/scm/adapters/mercurial_adapter.rb b/lib/redmine/scm/adapters/mercurial_adapter.rb
index da831323f..ad8a435dd 100644
--- a/lib/redmine/scm/adapters/mercurial_adapter.rb
+++ b/lib/redmine/scm/adapters/mercurial_adapter.rb
@@ -154,7 +154,7 @@ module Redmine
               # do nothing
             end
           end
-          path_prefix = path.blank? ? '' : with_trailling_slash(path)
+          path_prefix = path.blank? ? '' : with_trailing_slash(path)
 
           entries = Entries.new
           as_ary(manifest['dir']).each do |e|