diff --git a/sycl/source/detail/stream_impl.cpp b/sycl/source/detail/stream_impl.cpp
index a7b57e2e0fbf0..80117b2a1a4e8 100644
--- a/sycl/source/detail/stream_impl.cpp
+++ b/sycl/source/detail/stream_impl.cpp
@@ -39,6 +39,7 @@ void stream_impl::flush() {
       range<1>(BufferSize_), id<1>(OffsetSize));
 
   printf("%s", HostAcc.get_pointer());
+  fflush(stdout);
 }
 } // namespace detail
 } // namespace sycl