diff --git a/src/index.js b/src/index.js
index 252260b..1970b60 100644
--- a/src/index.js
+++ b/src/index.js
@@ -49,3 +49,4 @@ export { graph_connect } from './graph_connect';
 export { graph_empty_nodes, graph_empty } from './graph_empty';
 export { graph_random_erdos_renyi, graph_random } from './graph_random';
 export { hcluster } from './hcluster';
+export { intersect_sorted_ints } from './intersect';
diff --git a/src/intersect.js b/src/intersect.js
index f324316..03c44cc 100644
--- a/src/intersect.js
+++ b/src/intersect.js
@@ -1,4 +1,4 @@
-function intersect_sorted_ints(array1, array2) 
+export function intersect_sorted_ints(array1, array2) 
 {
   var ai = 0, bi= 0;
   var result = [];