diff --git a/posix/subsystem/src/subsystem/block.cpp b/posix/subsystem/src/subsystem/block.cpp
index aa9241ba5..6149c306c 100644
--- a/posix/subsystem/src/subsystem/block.cpp
+++ b/posix/subsystem/src/subsystem/block.cpp
@@ -51,7 +51,10 @@ struct Device final : UnixDevice, drvcore::BlockDevice {
 	}
 
 	void composeUevent(drvcore::UeventProperties &ue) override {
+		std::pair<int, int> dev = getId();
 		ue.set("SUBSYSTEM", "block");
+		ue.set("MAJOR", std::to_string(dev.first));
+		ue.set("MINOR", std::to_string(dev.second));
 	}
 
 	int major;