diff --git a/userspace/falco/configuration.h b/userspace/falco/configuration.h
index 40a518e2..f7a9c3a0 100644
--- a/userspace/falco/configuration.h
+++ b/userspace/falco/configuration.h
@@ -213,7 +213,7 @@ public:
 	bool m_capture_enabled;
 	std::string m_capture_path_prefix;
 	capture_mode_t m_capture_mode = capture_mode_t::RULES;
-	u_int64_t m_capture_default_duration_ns;
+	uint64_t m_capture_default_duration_ns;
 
 	// Falco engine
 	engine_kind_t m_engine_mode = engine_kind_t::KMOD;