diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd3b840cf..b0ae89174 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## v1.2 [unreleased]
+
+### Bugfixes
+
+- [#1917](https://github.com/influxdata/telegraf/pull/1917): fix puppetagent inputs plugin to support string for config variable.
+ 
 ## v1.1 [unreleased]
 
 ### Release Notes
diff --git a/plugins/inputs/puppetagent/puppetagent.go b/plugins/inputs/puppetagent/puppetagent.go
index 3b22c3d10..c8a265bb8 100644
--- a/plugins/inputs/puppetagent/puppetagent.go
+++ b/plugins/inputs/puppetagent/puppetagent.go
@@ -68,8 +68,8 @@ type time struct {
 }
 
 type version struct {
-	Config_string string `yaml:"config"`
-	Puppet        string `yaml:"puppet"`
+	ConfigString string `yaml:"config"`
+	Puppet       string `yaml:"puppet"`
 }
 
 // SampleConfig returns sample configuration message