diff --git a/src/psx/gpu.cpp b/src/psx/gpu.cpp
index 78fb66f..107cab0 100644
--- a/src/psx/gpu.cpp
+++ b/src/psx/gpu.cpp
@@ -1068,7 +1068,9 @@ pscpu_timestamp_t PS_GPU::Update(const pscpu_timestamp_t sys_timestamp)
      PSX_RequestMLExit();
     }
 
+#ifdef WANT_DEBUGGER
     DBG_GPUScanlineHook(scanline);
+#endif
 
     // printf("[GPU] DTA scanline=%3d --- %8d\n", scanline, DrawTimeAvail);