diff --git a/src/gfxstream/guest/platform/include/VirtGpu.h b/src/gfxstream/guest/platform/include/VirtGpu.h
index aea25346db7..e4313bbd4ce 100644
--- a/src/gfxstream/guest/platform/include/VirtGpu.h
+++ b/src/gfxstream/guest/platform/include/VirtGpu.h
@@ -129,7 +129,7 @@ struct VirtGpuPciBusInfo {
     uint8_t function;
 };
 
-constexpr int32_t INVALID_DESCRIPTOR = 0xFFFFFFFF;
+constexpr int32_t INVALID_DESCRIPTOR = -1;
 
 class VirtGpuResourceMapping;
 class VirtGpuResource;