diff --git a/exercises/concept/lasagna/test_lasagna.R b/exercises/concept/lasagna/test_lasagna.R
index f163cc91..9806c208 100644
--- a/exercises/concept/lasagna/test_lasagna.R
+++ b/exercises/concept/lasagna/test_lasagna.R
@@ -1,3 +1,4 @@
+source("./lasagna.R")
 library(testthat)
 
 test_that("Expected minutes in the oven", {