diff --git a/src/qemu.rs b/src/qemu.rs
index e794f16..7780e01 100644
--- a/src/qemu.rs
+++ b/src/qemu.rs
@@ -101,9 +101,12 @@ pub(crate) fn run(
         let tag = format!("slim{i}");
         let dest_b64 = base64::engine::general_purpose::STANDARD.encode(path_str.as_bytes());
 
+        // QEMU's QemuOpts splits on commas — escape literal commas in the
+        // path as ",," per QEMU convention.
+        let path_escaped = path_str.replace(',', ",,");
         virtfs_args.push("-virtfs".into());
         virtfs_args.push(format!(
-            "local,path={path_str},mount_tag={tag},security_model=mapped-xattr"
+            "local,path={path_escaped},mount_tag={tag},security_model=mapped-xattr"
         ));
         cmdline.push(format!("slim.mount={tag}:{dest_b64}"));
     }