diff --git a/base.go b/base.go
index d070b35..ce7bc02 100644
--- a/base.go
+++ b/base.go
@@ -39,7 +39,7 @@ func buildBodyRequest(ver, rawurl string, body *Body) *http.Request {
 		}
 	} else {
 		if contentType == "" {
-			if ver == "POST" || ver == "PUT" || ver == "Patch" {
+			if ver == "POST" || ver == "PUT" || ver == "PATCH" {
 				contentType = TypeURLENCODED
 			}
 		}