diff --git a/src/config.rs b/src/config.rs
index 02506b7..bf91ba3 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -104,6 +104,7 @@ pub struct MountSpec {
 pub enum MountProvider {
     Icloud,
     GoogleDrive,
+    #[serde(rename = "onedrive", alias = "one-drive")]
     OneDrive,
 }
 
@@ -812,4 +813,32 @@ windows = "none"
         let decoded: Config = toml::from_str(&encoded).unwrap();
         assert_eq!(decoded, config);
     }
+
+    #[test]
+    fn onedrive_accepts_legacy_spelling_and_serializes_canonical_name() {
+        for provider in ["onedrive", "one-drive"] {
+            let config: Config = toml::from_str(&format!(
+                "[mounts.work]\nprovider = \"{provider}\"\naccount = \"business\"\n"
+            ))
+            .unwrap();
+            assert_eq!(config.validate(), Ok(()));
+            assert_eq!(
+                config.mounts["work"].provider,
+                Some(MountProvider::OneDrive)
+            );
+            assert_eq!(
+                config.mounts["work"].account,
+                Some(OneDriveAccount::Business)
+            );
+
+            let encoded = toml::to_string_pretty(&config).unwrap();
+            let document: toml::Value = toml::from_str(&encoded).unwrap();
+            assert_eq!(
+                document["mounts"]["work"]["provider"].as_str(),
+                Some("onedrive")
+            );
+            let decoded: Config = toml::from_str(&encoded).unwrap();
+            assert_eq!(decoded, config);
+        }
+    }
 }
diff --git a/tests/config_mounts_integration.rs b/tests/config_mounts_integration.rs
index fdea92c..02809b4 100644
--- a/tests/config_mounts_integration.rs
+++ b/tests/config_mounts_integration.rs
@@ -93,6 +93,34 @@ impl Fixture {
     }
 }
 
+#[test]
+fn completions_accept_documented_and_legacy_onedrive_configs() {
+    let temp = TempDir::new("onedrive-config");
+    let config = temp.path().join("config.toml");
+    for provider in ["onedrive", "one-drive"] {
+        fs::write(
+            &config,
+            format!(
+                "[mounts]\nonedrive-work = {{ provider = \"{provider}\", account = \"business\" }}\n"
+            ),
+        )
+        .unwrap();
+        let output = cj(temp.path(), temp.path())
+            .arg("-C")
+            .arg(&config)
+            .args(["completions", "bash"])
+            .output()
+            .unwrap();
+        assert_success(&output);
+        assert!(output.stderr.is_empty());
+        assert!(
+            String::from_utf8(output.stdout)
+                .unwrap()
+                .contains("'onedrive-work'")
+        );
+    }
+}
+
 #[test]
 fn resolves_aliases_and_explicit_mounts_with_resolver_controls() {
     let fixture = Fixture::new("configured-destinations");