diff --git a/metadata.rb b/metadata.rb
index ebdbf105..bda51509 100644
--- a/metadata.rb
+++ b/metadata.rb
@@ -43,9 +43,10 @@
   depends 'apt'
 end
 
-# Use '< 5.0' with Chef < 12.14
+# Must be '>= 3.0' and '< 5.0' with Chef < 12.14
+# Chef allows only one constraint and '~> 3.0' means '>= 3.0' and '< 4.0'
 if current_chef_version < Gem::Version.new(12.14)
-  depends 'yum', '>= 3.0', '< 5.0'
+  depends 'yum', '~> 3.0'
 else
   depends 'yum', '>= 3.0'
 end
diff --git a/resources/monitor.rb b/resources/monitor.rb
index 087da767..2c930126 100644
--- a/resources/monitor.rb
+++ b/resources/monitor.rb
@@ -78,7 +78,7 @@
     init_config = new_resource.init_config
     if new_resource.is_jmx
       init_config ||= {}
-      init_config = init_config.merge({ 'is_jmx': true, 'collect_default_metrics': true })
+      init_config = init_config.merge({ 'is_jmx' => true, 'collect_default_metrics' => true })
     end
 
     variables(