diff --git a/R/format_bf.R b/R/format_bf.R
index ac3d63e46..81c850ab2 100644
--- a/R/format_bf.R
+++ b/R/format_bf.R
@@ -87,14 +87,22 @@ format_bf <- function(bf,
     )
   )
 
-  ## Add stars
-  bf_text <- ifelse(bf_orig < (1 / 30), paste0(bf_text, paste(rep_len(inferiority_star, 3), collapse = "")), # nolint
+  ## Add inferiority stars
+  if (!is.null(inferiority_star)) {
+    bf_text <- ifelse(bf_orig < (1 / 30), paste0(bf_text, paste(rep_len(inferiority_star, 3), collapse = "")), # nolint
     ifelse(bf_orig < 0.1, paste0(bf_text, paste(rep_len(inferiority_star, 2), collapse = "")), # nolint
       ifelse(bf_orig < (1 / 3), paste0(bf_text, inferiority_star), bf_text) # nolint
     )
   )
+  }
 
-  out <- .add_prefix_and_remove_stars(p_text = bf_text, stars, stars_only, name, inferiority_star)
+  out <- .add_prefix_and_remove_stars(
+    p_text = bf_text,
+    stars = stars,
+    stars_only = stars_only,
+    name = name,
+    inferiority_star = inferiority_star
+  )
   if (is.na(na_reference)) out[bad_bf] <- ""
   out
 }
diff --git a/R/format_p.R b/R/format_p.R
index 432858a0e..0965adf9e 100644
--- a/R/format_p.R
+++ b/R/format_p.R
@@ -123,10 +123,16 @@ format_p <- function(p,
   }
 
   if (stars_only) {
-    p_text <- gsub(paste0("[^(\\*|", inferiority_star, ")]"), "", p_text)
+    if (is.null(inferiority_star)) {
+      p_text <- gsub(paste0("[^(\\*)]"), "", p_text)
+    } else {
+      p_text <- gsub(paste0("[^(\\*|", inferiority_star, ")]"), "", p_text)
+    }
   } else if (!stars) {
     p_text <- gsub("*", "", p_text, fixed = TRUE)
-    p_text <- gsub(inferiority_star, "", p_text, fixed = TRUE)
+    if (!is.null(inferiority_star)) {
+      p_text <- gsub(inferiority_star, "", p_text, fixed = TRUE)
+    }
   }
 
   # replace missing with related string
diff --git a/tests/testthat/test-format.R b/tests/testthat/test-format.R
index 87d526384..ab6c6b717 100644
--- a/tests/testthat/test-format.R
+++ b/tests/testthat/test-format.R
@@ -114,6 +114,10 @@ test_that("format others", {
     format_bf(c(0.000045, 0.233, NA, 1557, 3.54), stars = TRUE),
     c("BF < 0.001°°°", "BF = 0.233°", "", "BF > 1000***", "BF = 3.54*")
   )
+  expect_identical(
+    format_bf(c(0.000045, 0.233, NA, 1557, 3.54), stars = TRUE, inferiority_star = NULL),
+    c("BF < 0.001", "BF = 0.233", "", "BF > 1000***", "BF = 3.54*")
+  )
   expect_identical(
     format_bf(c(0.000045, 0.233, NA, 1557, 3.54), stars = TRUE, stars_only = TRUE),
     c("°°°", "°", "", "***", "*")