diff --git a/tests/testthat/_snaps/case-when.md b/tests/testthat/_snaps/case-when.md
index 177e929546..1741efeec3 100644
--- a/tests/testthat/_snaps/case-when.md
+++ b/tests/testthat/_snaps/case-when.md
@@ -14,6 +14,14 @@
       Error:
       ! Case 1 (`!!!fs`) must be a two-sided formula, not a call.
 
+# invalid type errors are correct (#6261) (#6206)
+
+    Code
+      case_when(TRUE ~ 1, TRUE ~ "x")
+    Condition
+      Error in `case_when()`:
+      ! Can't combine `TRUE ~ 1` <double> and `TRUE ~ "x"` <character>.
+
 # trying to mix the old interface with new arguments isn't allowed
 
     Code
diff --git a/tests/testthat/test-case-when.R b/tests/testthat/test-case-when.R
index df8b7047e3..a6086dfae9 100644
--- a/tests/testthat/test-case-when.R
+++ b/tests/testthat/test-case-when.R
@@ -94,6 +94,12 @@ test_that("doesn't support quosures in the new interface", {
   })
 })
 
+test_that("invalid type errors are correct (#6261) (#6206)", {
+  expect_snapshot(error = TRUE, {
+    case_when(TRUE ~ 1, TRUE ~ "x")
+  })
+})
+
 test_that("trying to mix the old interface with new arguments isn't allowed", {
   expect_snapshot(error = TRUE, case_when(1 ~ 2, .default = 3))
   expect_snapshot(error = TRUE, case_when(1 ~ 2, .ptype = integer()))