diff --git a/apk_frauder/src/lib.rs b/apk_frauder/src/lib.rs
index a9ae355..06b556d 100644
--- a/apk_frauder/src/lib.rs
+++ b/apk_frauder/src/lib.rs
@@ -245,7 +245,7 @@ pub fn replace_dex(
         .arg("--in")
         .arg(aligned_path.as_os_str());
     let cmd = if let Some(pwd) = keypassword {
-        cmd.arg("--ks-pass").arg(format!("pass:${pwd}"))
+        cmd.arg("--ks-pass").arg(format!("pass:{pwd}"))
     } else {
         cmd
     };