diff --git a/include/stdex/interval.hpp b/include/stdex/interval.hpp
index 54af0810a..5b327886e 100644
--- a/include/stdex/interval.hpp
+++ b/include/stdex/interval.hpp
@@ -53,6 +53,15 @@ namespace stdex
 		///
 		inline bool empty() const { return start >= end; }
 
+		///
+		/// Invalidates interval
+		///
+		inline void invalidate()
+		{
+			start = static_cast<T>(1);
+			end = static_cast<T>(0);
+		}
+
 		///
 		/// Is interval valid?
 		///