diff --git a/src/comm/S3.cpp b/src/comm/S3.cpp
index 7dde3a5..9d865ea 100644
--- a/src/comm/S3.cpp
+++ b/src/comm/S3.cpp
@@ -24,8 +24,7 @@ FMI::Comm::S3::S3(std::map<std::string, std::string> params, std::map<std::strin
     download_price = std::stod(model_params["download_price"]);
     upload_price = std::stod(model_params["upload_price"]);
 
-    auto credentialsProvider = Aws::MakeShared<Aws::Auth::EnvironmentAWSCredentialsProvider>(TAG);
-    client = Aws::MakeUnique<Aws::S3::S3Client>(TAG, credentialsProvider, config);
+    client = Aws::MakeUnique<Aws::S3::S3Client>(TAG, config);
 }
 
 FMI::Comm::S3::~S3() {