diff --git a/src/core/hle/service/dsp/dsp_dsp.cpp b/src/core/hle/service/dsp/dsp_dsp.cpp
index dcfb73d6e..720c4595a 100644
--- a/src/core/hle/service/dsp/dsp_dsp.cpp
+++ b/src/core/hle/service/dsp/dsp_dsp.cpp
@@ -161,7 +161,7 @@ void DSP_DSP::ReadPipeIfPossible(Kernel::HLERequestContext& ctx) {
 
     IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
     rb.Push(RESULT_SUCCESS);
-    rb.Push<u16>(pipe_readable_size);
+    rb.Push<u16>(pipe_buffer.size());
     rb.PushStaticBuffer(std::move(pipe_buffer), 0);
 
     LOG_DEBUG(Service_DSP, "channel={}, peer={}, size=0x{:04X}, pipe_readable_size=0x{:04X}",