diff --git a/src/gfxstream/guest/platform/include/VirtGpu.h b/src/gfxstream/guest/platform/include/VirtGpu.h
index cd680b1373c..528665e0ac1 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;
 };
 
-#define INVALID_DESCRIPTOR -1
+#define INVALID_DESCRIPTOR 0xFFFFFFFFU
 
 class VirtGpuResourceMapping;
 class VirtGpuResource;