diff --git a/src/lib.rs b/src/lib.rs
index 035cead..7649a6f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -837,8 +837,7 @@ impl Config {
                         || cfg!(target_os = "openbsd")
                         || cfg!(target_os = "netbsd")
                         || cfg!(target_os = "freebsd")
-                        || cfg!(target_os = "bitrig")
-                        || cfg!(target_os = "dragonflybsd")) =>
+                        || cfg!(target_os = "dragonfly")) =>
                 {
                     use_jobserver = true;
                     cmd.env("MAKEFLAGS", makeflags);