diff --git a/tests/testthat/test-check_heterogeneity_bias.R b/tests/testthat/test-check_heterogeneity_bias.R
index c3dfd95fe..9701a7c03 100644
--- a/tests/testthat/test-check_heterogeneity_bias.R
+++ b/tests/testthat/test-check_heterogeneity_bias.R
@@ -1,4 +1,5 @@
 test_that("check_heterogeneity_bias", {
+  skip_if_not_installed("datawizard")
   data(iris)
   set.seed(123)
   iris$ID <- sample.int(4, nrow(iris), replace = TRUE) # fake-ID