diff --git a/badge.go b/badge.go
index 1c3932e..3ea0139 100644
--- a/badge.go
+++ b/badge.go
@@ -20,7 +20,7 @@ func init() {
 type Badge struct {
 	// Schema version. Always the number 1.
 	// Required.
-	Version int `json:"schema_version" schema:"-"`
+	Version int `json:"schemaVersion" schema:"-"`
 
 	// The left text, or the empty string to omit the left side of the badge.
 	// Required.
diff --git a/badge_test.go b/badge_test.go
index ee60508..9295658 100644
--- a/badge_test.go
+++ b/badge_test.go
@@ -33,7 +33,7 @@ func TestFromRequest(t *testing.T) {
 	label := "foo"
 	message := "bar"
 	values := url.Values{}
-	values.Set("schema_version", "2") // ignored
+	values.Set("schemaVersion", "2") // ignored
 	values.Set("label", "fizz")
 	values.Set("labelColor", ColorGreen)
 	values.Set("message", "buzz") // ignored