diff --git a/services/mediaresourcemanager/ResourceManagerService.h b/services/mediaresourcemanager/ResourceManagerService.h
index f500c62..92048c3 100644
--- a/services/mediaresourcemanager/ResourceManagerService.h
+++ b/services/mediaresourcemanager/ResourceManagerService.h
@@ -41,7 +41,7 @@
 using ::aidl::android::media::MediaResourcePolicyParcel;
 
 typedef std::map<std::tuple<
-        MediaResource::Type, MediaResource::SubType, std::vector<int8_t>>,
+        MediaResource::Type, MediaResource::SubType, std::vector<uint8_t>>,
         MediaResourceParcel> ResourceList;
 
 struct ResourceInfo {