diff --git a/src/cli/cli_helper.rb b/src/cli/cli_helper.rb
index 4e4258af61..e521f194ce 100644
--- a/src/cli/cli_helper.rb
+++ b/src/cli/cli_helper.rb
@@ -325,7 +325,7 @@ module CLIHelper
             column[:size] = 5
 
             conf.each do |c|
-                case c.is_a?
+                case c.class
                 when Symbol
                     column[c] = true
                 when Hash
diff --git a/src/oneprovision/lib/utils.rb b/src/oneprovision/lib/utils.rb
index 4b418d3f4b..ccb8b8d3ed 100644
--- a/src/oneprovision/lib/utils.rb
+++ b/src/oneprovision/lib/utils.rb
@@ -306,7 +306,7 @@ module OneProvision
             def evaluate_erb(provision, root)
                 if root.is_a? Hash
                     root.each_pair do |key, value|
-                        case value.is_a?
+                        case value.class
                         when Array
                             root[key] = value.map do |x|
                                 evaluate_erb(provision, x)