diff --git a/libs/libavf/include/android/virtualization.h b/libs/libavf/include/android/virtualization.h
index c2939bf..6b54bf7 100644
--- a/libs/libavf/include/android/virtualization.h
+++ b/libs/libavf/include/android/virtualization.h
@@ -79,8 +79,8 @@
  * \return If successful, it returns 0. If `instanceIdSize` is incorrect, it returns -EINVAL.
  */
 int AVirtualMachineRawConfig_setInstanceId(AVirtualMachineRawConfig* _Nonnull config,
-                                           const int8_t* _Nonnull instanceId, size_t instanceIdSize)
-        __INTRODUCED_IN(36);
+                                           const uint8_t* _Nonnull instanceId,
+                                           size_t instanceIdSize) __INTRODUCED_IN(36);
 
 /**
  * Set a kernel image of a virtual machine.