diff --git a/R/epi_df.R b/R/epi_df.R
index 541e045d..2da3eac5 100644
--- a/R/epi_df.R
+++ b/R/epi_df.R
@@ -96,6 +96,7 @@ new_epi_df <- function(x = tibble::tibble(), geo_type, as_of,
                        additional_metadata = list(), ...) {
   assert_data_frame(x)
   assert_list(additional_metadata)
+  rlang::check_dots_empty()
 
   additional_metadata[["other_keys"]] <- additional_metadata[["other_keys"]] %||% character(0L)