diff --git a/tests/testthat/test-rpi_get.R b/tests/testthat/test-rpi_get.R
index 60421c7..3670edf 100644
--- a/tests/testthat/test-rpi_get.R
+++ b/tests/testthat/test-rpi_get.R
@@ -1,4 +1,4 @@
 test_that("rpi_get", {
   skip_if_not(is.rpi(), message = "Not a Raspberry Pi")
-  skip("skip")
+  expect_error(rpi_get(1), info = "rpi_get(1) isn't valid")
 })
diff --git a/tests/testthat/test-rpi_i2c_set.R b/tests/testthat/test-rpi_i2c_set.R
index f2d9446..c0e6f62 100644
--- a/tests/testthat/test-rpi_i2c_set.R
+++ b/tests/testthat/test-rpi_i2c_set.R
@@ -1,4 +1,4 @@
 test_that("rpi_i2c_set", {
   skip_if_not(is.rpi(), message = "Not a Raspberry Pi")
-  skip("skip")
+  expect_error(rpi_i2c_set(1), info = "rpi_i2c_set(1) isn't valid")
 })
diff --git a/tests/testthat/test-rpi_monitor.R b/tests/testthat/test-rpi_monitor.R
index c46b3e3..9623258 100644
--- a/tests/testthat/test-rpi_monitor.R
+++ b/tests/testthat/test-rpi_monitor.R
@@ -1,4 +1,4 @@
 test_that("test rpi_monitor", {
   skip_if_not(is.rpi(), message = "Not a Raspberry Pi")
-  skip("skip")
+  expect_error(rpi_monitor(1), info = "rpi_monitor(1) isn't valid")
 })