diff --git a/source/mijin/io/stream.hpp b/source/mijin/io/stream.hpp
index 5dfe7c8..e8915c9 100644
--- a/source/mijin/io/stream.hpp
+++ b/source/mijin/io/stream.hpp
@@ -115,7 +115,7 @@ public:
     mijin::Task<StreamError> c_readRaw(void* outData, std::size_t bytes, const ReadOptions& options = {}, std::size_t* outBytesRead = nullptr)
     {
         std::uint8_t* ptr = static_cast<std::uint8_t*>(outData);
-        return c_readRaw(std::span(ptr, ptr + bytes), options, outBytesRead);
+        co_return co_await c_readRaw(std::span(ptr, ptr + bytes), options, outBytesRead);
     }
 
     template<std::ranges::contiguous_range TRange>