diff --git a/tests/testthat/test_01-inputdata.R b/tests/testthat/test_01-inputdata.R
index f3c174b18..d64cc3970 100644
--- a/tests/testthat/test_01-inputdata.R
+++ b/tests/testthat/test_01-inputdata.R
@@ -11,7 +11,7 @@ test_that("Are all input data files present?", {
     w <- capture_warnings(updateInputData(cfg = gms::readDefaultConfig("../.."), remindPath = "../.."))
     # ignore warning about missing historical.mif, raise warning if there were other wargnings
     ignore <- "File historical.mif seems to be missing!"
-    if (!w %in% ignore) {
+    if (length(w) > 0 && !w %in% ignore) {
       warning(paste0("'updateInputData' raised the following wargnings\n", paste(w, collapse = "\n")))
     }
     gms::model_unlock(lockID)