diff --git a/jwt.go b/jwt.go
index 98760ab..15f1e57 100644
--- a/jwt.go
+++ b/jwt.go
@@ -771,7 +771,7 @@ func toOPAPayload(request *http.Request, includeBody bool) (*Payload, error) {
 				if err != nil {
 					return nil, err
 				}
-			} else if contentType == "application/x-www-url-formencoded" {
+			} else if contentType == "application/x-www-form-urlencoded" {
 				input.Form, err = url.ParseQuery(string(save))
 				if err != nil {
 					return nil, err
diff --git a/jwt_test.go b/jwt_test.go
index ecfed79..53c5813 100644
--- a/jwt_test.go
+++ b/jwt_test.go
@@ -179,7 +179,7 @@ func TestServeOPAWithBody(t *testing.T) {
 		{
 			name:        "form",
 			method:      "POST",
-			contentType: "application/x-www-url-formencoded",
+			contentType: "application/x-www-form-urlencoded",
 			body:        `foo=bar&bar=foo`,
 			allowed:     true,
 			expectedForm: map[string][]string{