diff --git a/RuriLib/Blocks/BlockRequest.cs b/RuriLib/Blocks/BlockRequest.cs
index 0ab08b5..d69dcb3 100644
--- a/RuriLib/Blocks/BlockRequest.cs
+++ b/RuriLib/Blocks/BlockRequest.cs
@@ -434,7 +434,11 @@ namespace RuriLib
                     var replacedKey = key.Replace("-", "").ToLower(); // Used to compare with the HttpHeader enum
                     var val = ReplaceValues(header.Value, data);
 
-                    if (replacedKey == "contenttype") content.ContentType = val; // If it's somewhat needed to define Content-Type in e.g. a GET request
+                    if (replacedKey == "contenttype") // If it's somewhat needed to define Content-Type in e.g. a GET request
+                    {
+                        content = new StringContent("");
+                        content.ContentType = val;
+                    }
                     else if (fixedNames.Contains(replacedKey)) request.AddHeader((HttpHeader)Enum.Parse(typeof(HttpHeader), replacedKey, true), val);
                     else request.AddHeader(key, val);