diff --git a/src/main/java/io/supertokens/webserver/api/oauth/OAuthTokenAPI.java b/src/main/java/io/supertokens/webserver/api/oauth/OAuthTokenAPI.java
index 923829e44..ee6743681 100644
--- a/src/main/java/io/supertokens/webserver/api/oauth/OAuthTokenAPI.java
+++ b/src/main/java/io/supertokens/webserver/api/oauth/OAuthTokenAPI.java
@@ -106,7 +106,7 @@ protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws I
             String[] parsedHeader = Utils.convertFromBase64(authorizationHeader.replaceFirst("^Basic ", "").trim()).split(":");
             clientId = parsedHeader[0];
         } else {
-            clientId = InputParser.parseStringOrThrowError(input, formFields.get("client_id"), false);
+            clientId = formFields.get("client_id");
         }
 
         try {