diff --git a/src/uvw/stream.hpp b/src/uvw/stream.hpp
index f2d5d2bd..f1eb8dda 100644
--- a/src/uvw/stream.hpp
+++ b/src/uvw/stream.hpp
@@ -143,7 +143,7 @@ class StreamHandle: public Handle<T, U> {
     static void readCallback(uv_stream_t *handle, ssize_t nread, const uv_buf_t *buf) {
         T &ref = *(static_cast<T*>(handle->data));
         // data will be destroyed no matter of what the value of nread is
-        std::unique_ptr<const char[]> data{buf->base};
+        std::unique_ptr<char[]> data{buf->base};
 
         if(nread == UV_EOF) {
             // end of stream