diff --git a/config/validate/rules.go b/config/validate/rules.go
index 4ba9606..1f65114 100644
--- a/config/validate/rules.go
+++ b/config/validate/rules.go
@@ -57,9 +57,9 @@ func checkEncoding(cfg node, report *Report) {
 			continue
 		}
 
-		c := f.Child("contents")
+		c := f.Child("content")
 		if _, err := config.DecodeContent(c.String(), e.String()); err != nil {
-			report.Error(c.line, fmt.Sprintf("contents cannot be decoded as %q", e.String()))
+			report.Error(c.line, fmt.Sprintf("content cannot be decoded as %q", e.String()))
 		}
 	}
 }
diff --git a/config/validate/rules_test.go b/config/validate/rules_test.go
index dbfbaf8..01d4231 100644
--- a/config/validate/rules_test.go
+++ b/config/validate/rules_test.go
@@ -60,27 +60,27 @@ func TestCheckEncoding(t *testing.T) {
 	}{
 		{},
 		{
-			config: "write_files:\n  - encoding: base64\n    contents: aGVsbG8K",
+			config: "write_files:\n  - encoding: base64\n    content: aGVsbG8K",
 		},
 		{
-			config: "write_files:\n  - contents: !!binary aGVsbG8K",
+			config: "write_files:\n  - content: !!binary aGVsbG8K",
 		},
 		{
-			config:  "write_files:\n  - encoding: base64\n    contents: !!binary aGVsbG8K",
-			entries: []Entry{{entryError, `contents cannot be decoded as "base64"`, 3}},
+			config:  "write_files:\n  - encoding: base64\n    content: !!binary aGVsbG8K",
+			entries: []Entry{{entryError, `content cannot be decoded as "base64"`, 3}},
 		},
 		{
-			config: "write_files:\n  - encoding: base64\n    contents: !!binary YUdWc2JHOEsK",
+			config: "write_files:\n  - encoding: base64\n    content: !!binary YUdWc2JHOEsK",
 		},
 		{
-			config: "write_files:\n  - encoding: gzip\n    contents: !!binary H4sIAOC3tVQAA8tIzcnJ5wIAIDA6NgYAAAA=",
+			config: "write_files:\n  - encoding: gzip\n    content: !!binary H4sIAOC3tVQAA8tIzcnJ5wIAIDA6NgYAAAA=",
 		},
 		{
-			config: "write_files:\n  - encoding: gzip+base64\n    contents: H4sIAOC3tVQAA8tIzcnJ5wIAIDA6NgYAAAA=",
+			config: "write_files:\n  - encoding: gzip+base64\n    content: H4sIAOC3tVQAA8tIzcnJ5wIAIDA6NgYAAAA=",
 		},
 		{
-			config:  "write_files:\n  - encoding: custom\n    contents: hello",
-			entries: []Entry{{entryError, `contents cannot be decoded as "custom"`, 3}},
+			config:  "write_files:\n  - encoding: custom\n    content: hello",
+			entries: []Entry{{entryError, `content cannot be decoded as "custom"`, 3}},
 		},
 	}