diff --git a/R/standardize.models.R b/R/standardize.models.R
index a92ffe243..923c2a65d 100644
--- a/R/standardize.models.R
+++ b/R/standardize.models.R
@@ -78,6 +78,9 @@ standardize.default <- function(x,
     return(x)
   }
 
+  # check model formula. Some notations don't work when standardizing data
+  insight::formula_ok(x, verbose = verbose)
+
   data_std <- NULL # needed to avoid note
   .standardize_models(x,
     robust = robust, two_sd = two_sd,