diff --git a/worker/include/DepLibUring.hpp b/worker/include/DepLibUring.hpp
index cf7b883a52..aa7fe30f88 100644
--- a/worker/include/DepLibUring.hpp
+++ b/worker/include/DepLibUring.hpp
@@ -49,7 +49,8 @@ class DepLibUring
 	static void SetActive();
 	static bool IsActive();
 
-	class LibUring;
+	private:
+		class LibUring;
 
 	// Whether liburing is enabled or not after runtime checks.
 	static bool enabled;