diff --git a/crates/nu-command/src/system/which_.rs b/crates/nu-command/src/system/which_.rs
index 62154cf229..3e89a9896d 100644
--- a/crates/nu-command/src/system/which_.rs
+++ b/crates/nu-command/src/system/which_.rs
@@ -77,6 +77,8 @@ fn get_entry_in_commands(engine_state: &EngineState, name: &str, span: Span) ->
     if let Some(decl_id) = engine_state.find_decl(name.as_bytes(), &[]) {
         let (msg, is_builtin) = if engine_state.get_decl(decl_id).is_custom_command() {
             ("Nushell custom command", false)
+        } else if engine_state.get_decl(decl_id).is_alias() {
+            ("Nushell alias", false)
         } else {
             ("Nushell built-in command", true)
         };
diff --git a/crates/nu-command/tests/commands/which.rs b/crates/nu-command/tests/commands/which.rs
index 75557d9beb..b9f02e8b63 100644
--- a/crates/nu-command/tests/commands/which.rs
+++ b/crates/nu-command/tests/commands/which.rs
@@ -21,6 +21,19 @@ fn which_alias_ls() {
     assert_eq!(actual.out, "Nushell alias: ls -a");
 }
 
+#[test]
+fn which_custom_alias() {
+    let actual = nu!(
+        cwd: ".",
+        r#"alias foo = print "foo!"; which foo | to nuon"#
+    );
+
+    assert_eq!(
+        actual.out,
+        "[[arg, path, built-in]; [foo, \"Nushell alias\", false]]"
+    );
+}
+
 #[test]
 fn which_def_ls() {
     let actual = nu!(