diff --git a/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp b/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
index c88c634..838aca2 100644
--- a/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
+++ b/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
@@ -535,6 +535,10 @@
     int fds[2];
     ASSERT_EQ(0, pipe2(fds, O_NONBLOCK)) << errno;
 
+    // Make sure that the pipe is at least 1 MB in size. The test process runs
+    // in su domain, so it should be safe to make this call.
+    fcntl(fds[0], F_SETPIPE_SZ, 1 << 20);
+
     // Wrap the temporary file file descriptor in a native handle
     auto* nativeHandle = native_handle_create(1, 0);
     ASSERT_NE(nullptr, nativeHandle);