diff --git a/region.hpp b/region.hpp
index b9caf72b..ad17285b 100644
--- a/region.hpp
+++ b/region.hpp
@@ -146,6 +146,12 @@ namespace cruft {
                 hi (_hi)
             { ; }
 
+            iterator ()
+                : cursor {}
+                , lo {}
+                , hi {}
+            { ; }
+
 
             const point_t& operator* (void) const& { return cursor; }