diff --git a/lib/rspec-puppet/example/class_example_group.rb b/lib/rspec-puppet/example/class_example_group.rb
index bc137b85..95917a1c 100644
--- a/lib/rspec-puppet/example/class_example_group.rb
+++ b/lib/rspec-puppet/example/class_example_group.rb
@@ -43,8 +43,11 @@ def catalogue
       if !self.respond_to?(:params) || params == {}
         code = import_str + "include #{klass_name}"
       else
-        code = import_str + 'class' + " { \"" + klass_name + "\": " + params.keys.map { |r| "#{r.to_s} => #{params[r].inspect}"
-      }.join(',' ) + " }"
+        param_str = params.keys.map { |r|
+          param_val = escape_special_chars(params[r].inspect)
+          "#{r.to_s} => #{param_val}"
+        }.join(',')
+        code = import_str + 'class' + " { \"" + klass_name + "\": " + param_str + " }"
       end
       code = pre_cond + "\n" + code
 
diff --git a/lib/rspec-puppet/example/define_example_group.rb b/lib/rspec-puppet/example/define_example_group.rb
index 901be1d7..2043520a 100644
--- a/lib/rspec-puppet/example/define_example_group.rb
+++ b/lib/rspec-puppet/example/define_example_group.rb
@@ -32,7 +32,8 @@ def catalogue
 
       if self.respond_to? :params
         param_str = params.keys.map { |r|
-          "#{r.to_s} => #{params[r].inspect}"
+          param_val = escape_special_chars(params[r].inspect)
+          "#{r.to_s} => #{param_val}"
         }.join(', ')
       else
         param_str = ""
diff --git a/lib/rspec-puppet/support.rb b/lib/rspec-puppet/support.rb
index 917a917b..e7f2644e 100644
--- a/lib/rspec-puppet/support.rb
+++ b/lib/rspec-puppet/support.rb
@@ -29,5 +29,10 @@ def munge_facts(facts)
       facts.keys.each { |key| output[key.to_s] = facts[key] }
       output
     end
+
+    def escape_special_chars(string)
+      string.gsub!(/\$/, "\\$")
+      string
+    end
   end
 end