diff --git a/README.md b/README.md
index 2bf8181..a03f799 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,8 @@ The screenshot below show angular-selector in action with all options enabled:
 
 [Tom Grooffer](https://github.com/tomgrooffer) for fixing a crash with JSTZ
 
+[karlhass](https://github.com/karlhaas) for fixing a crash when two instances were present on the same page
+
 #### Attributions
 Inspired by [angular-timezone-select](https://github.com/alexcheng1982/angular-timezone-select) from [alexcheng1982](https://github.com/alexcheng1982).