diff --git a/src/polyfill.lua b/src/polyfill.lua
index aeda9fb..a6b010d 100644
--- a/src/polyfill.lua
+++ b/src/polyfill.lua
@@ -45,8 +45,7 @@ bit.tohex = function(x,n)
 end
 
 bit.lshift = function(x,n)
-    print("ERROR: Tell a dev to implement: bit.lshift")
-    error()
+    return bit.blshift(x,n);
 end