diff --git a/tests/testthat/test-coord-map.R b/tests/testthat/test-coord-map.R
index cc4a1b0f3a..9a8c9dc0b1 100644
--- a/tests/testthat/test-coord-map.R
+++ b/tests/testthat/test-coord-map.R
@@ -52,6 +52,7 @@ test_that("coord map throws error when limits are badly specified", {
 })
 
 test_that("coord_map throws informative warning about guides", {
+  skip_if_not_installed("mapproj")
   expect_snapshot_warning(
    ggplot_build(ggplot() + coord_map() + guides(x = guide_axis()))
   )