diff --git a/lib/cryptcheck/tls/https/server.rb b/lib/cryptcheck/tls/https/server.rb
index 0f640f0..5f23a37 100644
--- a/lib/cryptcheck/tls/https/server.rb
+++ b/lib/cryptcheck/tls/https/server.rb
@@ -1,67 +1,67 @@
 require 'httparty'
 
 module CryptCheck
-	module Tls
-		module Https
-			class Server < Tls::Server
-				attr_reader :hsts
+  module Tls
+    module Https
+      class Server < Tls::Server
+        attr_reader :hsts
 
-				def initialize(hostname, ip, family, port = 443)
-					super
-					fetch_hsts
-				end
+        def initialize(hostname, ip, family, port = 443)
+          super
+          fetch_hsts
+        end
 
-				def fetch_hsts
-					port = @port == 443 ? '' : ":#{@port}"
+        def fetch_hsts
+          port = @port == 443 ? '' : ":#{@port}"
 
-					begin
-						response = ::HTTParty.head "https://#{@hostname}#{port}/",
-												   {
-														   follow_redirects: false,
-														   verify:           false,
-														   timeout:          TLS_TIMEOUT,
-														   ssl_version:      @supported_methods.first.to_sym,
-														   ciphers:          Cipher::ALL
-												   }
-						if header = response.headers['strict-transport-security']
-							name, value = header.split '='
-							if name == 'max-age'
-								@hsts = value.to_i
-								Logger.info { 'HSTS : ' + @hsts.to_s.colorize(hsts_long? ? :good : nil) }
-								return
-							end
-						end
-					rescue Exception => e
-						Logger.debug { e }
-					end
+          begin
+            response = ::HTTParty.head "https://#{@hostname}#{port}/",
+                                       {
+                                         follow_redirects: false,
+                                         verify:           false,
+                                         timeout:          TLS_TIMEOUT,
+                                         ssl_version:      @supported_methods.first.to_sym,
+                                         ciphers:          Cipher::ALL
+                                       }
+            if header = response.headers['strict-transport-security']
+              name, value = header.split '='
+              if name == 'max-age'
+                @hsts = value.to_i
+                Logger.info { 'HSTS : ' + @hsts.to_s.colorize(hsts_long? ? :good : nil) }
+                return
+              end
+            end
+          rescue Exception => e
+            Logger.debug { e }
+          end
 
-					Logger.info { 'No HSTS'.colorize :warning }
-					@hsts = nil
-				end
+          Logger.info { 'No HSTS'.colorize :warning }
+          @hsts = nil
+        end
 
-				def hsts?
-					!@hsts.nil?
-				end
+        def hsts?
+          !@hsts.nil?
+        end
 
-				LONG_HSTS = 6 * 30 * 24 * 60 * 60
+        LONG_HSTS = 6 * 30 * 24 * 60 * 60
 
-				def hsts_long?
-					hsts? and @hsts >= LONG_HSTS
-				end
+        def hsts_long?
+          hsts? and @hsts >= LONG_HSTS
+        end
 
-				def to_h
-					super.merge({ hsts: @hsts })
-				end
+        def to_h
+          super.merge({ hsts: @hsts })
+        end
 
-				protected
+        protected
 
-				def available_checks
-					super + [
-							[:hsts, %i(warning good great), -> (s) { s.hsts_long? ? :great : s.hsts? ? :good : :warning }],
-					#[:must_staple, :best, -> (s) { s.must_staple? }],
-					]
-				end
-			end
-		end
-	end
+        def available_checks
+          super + [
+            [:hsts, %i(warning good great), -> (s) { s.hsts_long? ? :great : s.hsts? ? :good : :warning }],
+          #[:must_staple, :best, -> (s) { s.must_staple? }],
+          ]
+        end
+      end
+    end
+  end
 end