diff --git a/src/main.rs b/src/main.rs
index e739da3..a37092a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -37,13 +37,14 @@ fn main() -> Result<(), Box<dyn Error>> {
     let boot_folder = unsafe { boot_folder.unwrap_unchecked() };
 
     #[cfg(windows)]
-    if args.boot_directory.is_none() {
-        eprintln!("You must supply a boot-directory on windows; see --help");
-        exit(1);
-    }
+    let boot_folder = {
+        if args.boot_directory.is_none() {
+            eprintln!("You must supply a boot-directory on windows; see --help");
+            exit(1);
+        }
 
-    #[cfg(windows)]
-    let boot_folder = unsafe { args.boot_directory.unwrap_unchecked() };
+        unsafe { args.boot_directory.unwrap_unchecked() }
+    };
 
     let grub_env = boot_folder.join("grub/grubenv");