diff --git a/dist/URI.js b/dist/URI.js
index c838f2f..e8d4af0 100644
--- a/dist/URI.js
+++ b/dist/URI.js
@@ -10,7 +10,8 @@ function joinURI() {
     arr[_key] = arguments[_key];
   }
 
-  return normalizeURI(arr.join('/'));
+  var join = arr.join('/');
+  return normalizeURI(join[0] === '/' ? join.substring(1) : join);
 }
 
 function normalizeURI(uri) {
diff --git a/src/URI.js b/src/URI.js
index 3f49229..4f152c5 100644
--- a/src/URI.js
+++ b/src/URI.js
@@ -1,5 +1,6 @@
 export function joinURI (...arr) {
-  return normalizeURI(arr.join('/'))
+  const join = arr.join('/')
+  return normalizeURI(join[0] === '/' ? join.substring(1) : join)
 }
 
 export function normalizeURI (uri) {