diff --git a/clippy_lints/src/utils/conf.rs b/clippy_lints/src/utils/conf.rs
index 0e33ae740d9..d7744c09c11 100644
--- a/clippy_lints/src/utils/conf.rs
+++ b/clippy_lints/src/utils/conf.rs
@@ -149,7 +149,7 @@ define_Conf! {
         "WebGL",
         "TensorFlow",
         "TrueType",
-        "iOS", "macOS",
+        "iOS", "macOS", "FreeBSD",
         "TeX", "LaTeX", "BibTeX", "BibLaTeX",
         "MinGW",
         "CamelCase",
diff --git a/tests/ui/doc.rs b/tests/ui/doc.rs
index c946a047f1b..8afef6b23d4 100644
--- a/tests/ui/doc.rs
+++ b/tests/ui/doc.rs
@@ -64,7 +64,7 @@ fn test_units() {
 /// WebGL
 /// TensorFlow
 /// TrueType
-/// iOS macOS
+/// iOS macOS FreeBSD
 /// TeX LaTeX BibTeX BibLaTeX
 /// MinGW
 /// CamelCase (see also #2395)