1 files changed, 6 insertions, 0 deletions
diff --git a/lib/puppet/type/ini_setting.rb b/lib/puppet/type/ini_setting.rb
index f1ab490..50b6b38 100644
--- a/lib/puppet/type/ini_setting.rb
+++ b/lib/puppet/type/ini_setting.rb
@@ -35,6 +35,12 @@ Puppet::Type.newtype(:ini_setting) do
         'Defaults to " = ", but you could use this to override e.g. whether ' +
         'or not the separator should include whitespace.'
     defaultto(" = ")
+
+    validate do |value|
+      unless value.scan('=').size == 1
+        raise Puppet::Error, ":key_val_separator must contain exactly one = character."
+      end
+    end
   end
 
 end