diff --git a/src/uu/basenc/src/basenc.rs b/src/uu/basenc/src/basenc.rs
index ff512b176..ed117b22a 100644
--- a/src/uu/basenc/src/basenc.rs
+++ b/src/uu/basenc/src/basenc.rs
@@ -53,12 +53,14 @@ const ENCODINGS: &[(&str, Format, &str)] = &[
 pub fn uu_app() -> Command {
     let mut command = base_common::base_app(ABOUT, USAGE);
     for encoding in ENCODINGS {
-        command = command.arg(
-            Arg::new(encoding.0)
-                .long(encoding.0)
-                .help(encoding.2)
-                .action(ArgAction::SetTrue),
-        );
+        let raw_arg = Arg::new(encoding.0)
+            .long(encoding.0)
+            .help(encoding.2)
+            .action(ArgAction::SetTrue);
+        let overriding_arg = ENCODINGS
+            .iter()
+            .fold(raw_arg, |arg, enc| arg.overrides_with(enc.0));
+        command = command.arg(overriding_arg);
     }
     command
 }
diff --git a/tests/by-util/test_basenc.rs b/tests/by-util/test_basenc.rs
index 38e4ede71..2ed915cb5 100644
--- a/tests/by-util/test_basenc.rs
+++ b/tests/by-util/test_basenc.rs
@@ -173,3 +173,60 @@ fn test_base2lsbf_decode() {
         .no_stderr()
         .stdout_only("lsbf");
 }
+
+#[test]
+fn test_choose_last_encoding_z85() {
+    new_ucmd!()
+        .args(&[
+            "--base2lsbf",
+            "--base2msbf",
+            "--base16",
+            "--base32hex",
+            "--base64url",
+            "--base32",
+            "--base64",
+            "--z85",
+        ])
+        .pipe_in("Hello, World")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("nm=QNz.92jz/PV8\n");
+}
+
+#[test]
+fn test_choose_last_encoding_base64() {
+    new_ucmd!()
+        .args(&[
+            "--base2msbf",
+            "--base2lsbf",
+            "--base64url",
+            "--base32hex",
+            "--base32",
+            "--base16",
+            "--z85",
+            "--base64",
+        ])
+        .pipe_in("Hello, World!")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("SGVsbG8sIFdvcmxkIQ==\n"); // spell-checker:disable-line
+}
+
+#[test]
+fn test_choose_last_encoding_base2lsbf() {
+    new_ucmd!()
+        .args(&[
+            "--base64url",
+            "--base16",
+            "--base2msbf",
+            "--base32",
+            "--base64",
+            "--z85",
+            "--base32hex",
+            "--base2lsbf",
+        ])
+        .pipe_in("lsbf")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("00110110110011100100011001100110\n");
+}