diff --git a/cpp/Ordering.h b/cpp/Ordering.h
index 946f4e60b..80d5fc249 100644
--- a/cpp/Ordering.h
+++ b/cpp/Ordering.h
@@ -24,6 +24,13 @@ namespace gtsam {
 		Ordering() {
 		}
 
+		/**
+		 * Create from a single string
+		 */
+		Ordering(std::string key) {
+			push_back(key);
+		}
+
 		/**
 		 * Copy constructor from string vector
 		 */