diff --git a/docs/src/extensions.md b/docs/src/extensions.md
index fb91f7d54..3c051a1fa 100644
--- a/docs/src/extensions.md
+++ b/docs/src/extensions.md
@@ -93,3 +93,7 @@ also provides a `-v`/`--verbose` flag.
 ## `uptime`
 
 Similar to the proc-ps implementation and unlike GNU/Coreutils, `uptime` provides `-s`/`--since` to show since when the system is up.
+
+## `base32/base64/basenc`
+
+Just like on macOS, `base32/base64/basenc` provides `-D` to decode data.
diff --git a/src/uu/base32/src/base_common.rs b/src/uu/base32/src/base_common.rs
index 0515b52f3..67bd723e1 100644
--- a/src/uu/base32/src/base_common.rs
+++ b/src/uu/base32/src/base_common.rs
@@ -112,6 +112,7 @@ pub fn base_app(about: &'static str, usage: &str) -> Command {
         .arg(
             Arg::new(options::DECODE)
                 .short('d')
+                .visible_short_alias('D')
                 .long(options::DECODE)
                 .help("decode data")
                 .action(ArgAction::SetTrue)
diff --git a/tests/by-util/test_base32.rs b/tests/by-util/test_base32.rs
index 785db388b..eb75a4ddf 100644
--- a/tests/by-util/test_base32.rs
+++ b/tests/by-util/test_base32.rs
@@ -52,7 +52,7 @@ fn test_base32_encode_file() {
 
 #[test]
 fn test_decode() {
-    for decode_param in ["-d", "--decode", "--dec"] {
+    for decode_param in ["-d", "--decode", "--dec", "-D"] {
         let input = "JBSWY3DPFQQFO33SNRSCC===\n"; // spell-checker:disable-line
         new_ucmd!()
             .arg(decode_param)
diff --git a/tests/by-util/test_base64.rs b/tests/by-util/test_base64.rs
index de6cb48f9..937e2b073 100644
--- a/tests/by-util/test_base64.rs
+++ b/tests/by-util/test_base64.rs
@@ -72,7 +72,7 @@ fn test_base64_encode_file() {
 
 #[test]
 fn test_decode() {
-    for decode_param in ["-d", "--decode", "--dec"] {
+    for decode_param in ["-d", "--decode", "--dec", "-D"] {
         let input = "aGVsbG8sIHdvcmxkIQ=="; // spell-checker:disable-line
         new_ucmd!()
             .arg(decode_param)