diff --git a/src/uu/join/src/join.rs b/src/uu/join/src/join.rs
index 0050bf0c32d..61b972b247f 100644
--- a/src/uu/join/src/join.rs
+++ b/src/uu/join/src/join.rs
@@ -849,12 +849,10 @@ fn parse_settings(matches: &clap::ArgMatches, diag_args: Option<&[OsString]>) ->
         settings.empty = empty.as_bytes().to_vec();
     }
 
-    if matches.get_flag("nocheck-order") {
-        settings.check_order = CheckOrder::Disabled;
-    }
-
     if matches.get_flag("check-order") {
         settings.check_order = CheckOrder::Enabled;
+    } else if matches.get_flag("nocheck-order") {
+        settings.check_order = CheckOrder::Disabled;
     }
 
     if matches.get_flag("header") {
@@ -1016,12 +1014,14 @@ pub fn uu_app() -> Command {
             Arg::new("check-order")
                 .long("check-order")
                 .help(translate!("join-help-check-order"))
+                .overrides_with("nocheck-order")
                 .action(ArgAction::SetTrue),
         )
         .arg(
             Arg::new("nocheck-order")
                 .long("nocheck-order")
                 .help(translate!("join-help-nocheck-order"))
+                .overrides_with("check-order")
                 .action(ArgAction::SetTrue),
         )
         .arg(
diff --git a/tests/by-util/test_join.rs b/tests/by-util/test_join.rs
index 21334bd6b67..b8224a29385 100644
--- a/tests/by-util/test_join.rs
+++ b/tests/by-util/test_join.rs
@@ -1038,3 +1038,32 @@ fn test_missing_key_is_empty_key() {
         .succeeds()
         .stdout_only("1002 bob\n");
 }
+
+#[test]
+fn check_order_nocheck_order_last_wins() {
+    // --nocheck-order after --check-order: nocheck wins, unsorted input succeeds.
+    let ts = TestScenario::new(util_name!());
+    let at = &ts.fixtures;
+    at.write("unsorted.txt", "b\na\n");
+    ts.ucmd()
+        .args(&[
+            "--check-order",
+            "--nocheck-order",
+            "unsorted.txt",
+            "unsorted.txt",
+        ])
+        .succeeds()
+        .stdout_contains("a")
+        .stdout_contains("b");
+
+    // --check-order after --nocheck-order: check wins, unsorted input fails.
+    ts.ucmd()
+        .args(&[
+            "--nocheck-order",
+            "--check-order",
+            "unsorted.txt",
+            "unsorted.txt",
+        ])
+        .fails()
+        .stderr_contains("is not sorted");
+}