diff --git a/geom/segment.hpp b/geom/segment.hpp
index 8c4b1032..32bd6b8a 100644
--- a/geom/segment.hpp
+++ b/geom/segment.hpp
@@ -19,6 +19,9 @@ namespace cruft::geom {
     };
 
 
+    using segment2i = segment<2,int>;
+    using segment3i = segment<3,int>;
+
     using segment2f = segment<2,float>;
     using segment3f = segment<3,float>;
 
@@ -47,4 +50,4 @@ namespace cruft::geom {
     {
         return std::sqrt (distance2 (s, p));
     }
-};
+}