diff --git a/R/navs-legacy.R b/R/navs-legacy.R
index ad8626c9d..2ed977f69 100644
--- a/R/navs-legacy.R
+++ b/R/navs-legacy.R
@@ -216,6 +216,8 @@ navbar_options <- function(
     underline = missing(underline)
   )
 
+  rlang::check_dots_empty()
+
   opts <- list(
     position = rlang::arg_match(position),
     bg = bg,
diff --git a/tests/testthat/test-navs-legacy.R b/tests/testthat/test-navs-legacy.R
index 85a7882ed..4847aac21 100644
--- a/tests/testthat/test-navs-legacy.R
+++ b/tests/testthat/test-navs-legacy.R
@@ -20,6 +20,10 @@ test_that("navbar_options() print method", {
   )
 })
 
+test_that("navbar_options() errors if ... swallows unused options", {
+  expect_error(navbar_options(foo = "bar"))
+})
+
 test_that("navbar_options_resolve_deprecated() consolidates correctly", {
   # TODO-deprecated: Remove when direction options are deprecated with an error