diff --git a/src-tauri/src/commands/terminal.rs b/src-tauri/src/commands/terminal.rs
index d2dfc7b..07e2e1a 100644
--- a/src-tauri/src/commands/terminal.rs
+++ b/src-tauri/src/commands/terminal.rs
@@ -62,9 +62,11 @@ async fn prepare_credential_env(
         "GIT_CONFIG_KEY_0".to_string(),
         "credential.helper".to_string(),
     );
+    // Git parses credential.helper values using shell rules, so paths with
+    // spaces (e.g. "Application Support") must be quoted.
     env.insert(
         "GIT_CONFIG_VALUE_0".to_string(),
-        helper_path_str,
+        format!("\"{}\"", helper_path_str),
     );
 
     let files = TerminalCredFiles {