diff --git a/src/cocoatweet/api/interface/httpPost.cc b/src/cocoatweet/api/interface/httpPost.cc
index 187b2cb..ebed8cb 100644
--- a/src/cocoatweet/api/interface/httpPost.cc
+++ b/src/cocoatweet/api/interface/httpPost.cc
@@ -37,7 +37,7 @@ void HttpPost::process(std::weak_ptr<CocoaTweet::OAuth::OAuth1> _oauth,
     if (contentType_ == "application/x-www-form-urlencoded") {
       std::vector<std::string> tmp;
       for (const auto& [key, value] : bodyParam_) {
-        tmp.push_back(key + "=" + CocoaTweet::Util::urlEncode(value));
+        tmp.push_back(key + "=" + value);
         requestBody = CocoaTweet::Util::join(tmp, "&");
       }
     } else if (contentType_ == "multipart/form-data") {
diff --git a/src/cocoatweet/oauth/oauth.cc b/src/cocoatweet/oauth/oauth.cc
index 07c44e5..8224e68 100644
--- a/src/cocoatweet/oauth/oauth.cc
+++ b/src/cocoatweet/oauth/oauth.cc
@@ -24,7 +24,7 @@ std::map<std::string, std::string> OAuth1::signature(
     const std::string& _url) {
   std::vector<std::string> tmp;
   for (const auto& [key, value] : _param) {
-    tmp.push_back(key + "=" + CocoaTweet::Util::urlEncode(value));
+    tmp.push_back(key + "=" + value);
   }
 
   std::string query = CocoaTweet::Util::join(tmp, "&");