diff --git a/src/unistd.rs b/src/unistd.rs
index a9862d37a3..ca4360d1c5 100644
--- a/src/unistd.rs
+++ b/src/unistd.rs
@@ -815,11 +815,9 @@ pub fn execvpe<SA: AsRef<CStr>, SE: AsRef<CStr>>(filename: &CStr, args: &[SA], e
 ///
 /// This function is similar to `execve`, except that the program to be executed
 /// is referenced as a file descriptor instead of a path.
-// Note for NetBSD and OpenBSD: although rust-lang/libc includes it (under
-// unix/bsd/netbsdlike/) fexecve is not currently implemented on NetBSD nor on
-// OpenBSD.
 #[cfg(any(target_os = "android",
           target_os = "linux",
+          target_os = "dragonfly",
           target_os = "freebsd"))]
 #[inline]
 pub fn fexecve<SA: AsRef<CStr> ,SE: AsRef<CStr>>(fd: RawFd, args: &[SA], env: &[SE]) -> Result<Infallible> {
diff --git a/test/test_unistd.rs b/test/test_unistd.rs
index 3a3d49ddff..10c9414e9f 100644
--- a/test/test_unistd.rs
+++ b/test/test_unistd.rs
@@ -363,25 +363,21 @@ cfg_if!{
     if #[cfg(target_os = "android")] {
         execve_test_factory!(test_execve, execve, CString::new("/system/bin/sh").unwrap().as_c_str());
         execve_test_factory!(test_fexecve, fexecve, File::open("/system/bin/sh").unwrap().into_raw_fd());
-    } else if #[cfg(any(target_os = "freebsd",
+    } else if #[cfg(any(target_os = "dragonfly",
+                        target_os = "freebsd",
                         target_os = "linux"))] {
         // These tests frequently fail on musl, probably due to
         // https://github.com/nix-rust/nix/issues/555
         execve_test_factory!(test_execve, execve, CString::new("/bin/sh").unwrap().as_c_str());
         execve_test_factory!(test_fexecve, fexecve, File::open("/bin/sh").unwrap().into_raw_fd());
-    } else if #[cfg(any(target_os = "dragonfly",
-                        target_os = "illumos",
+    } else if #[cfg(any(target_os = "illumos",
                         target_os = "ios",
                         target_os = "macos",
                         target_os = "netbsd",
                         target_os = "openbsd",
                         target_os = "solaris"))] {
         execve_test_factory!(test_execve, execve, CString::new("/bin/sh").unwrap().as_c_str());
-        // No fexecve() on DragonFly, ios, macos, NetBSD, OpenBSD.
-        //
-        // Note for NetBSD and OpenBSD: although rust-lang/libc includes it
-        // (under unix/bsd/netbsdlike/) fexecve is not currently implemented on
-        // NetBSD nor on OpenBSD.
+        // No fexecve() on ios, macos, NetBSD, OpenBSD.
     }
 }