diff --git a/espanso/src/patch/patches/linux/thunderbird_x11.rs b/espanso/src/patch/patches/linux/thunderbird_x11.rs
index df0df04..eeb366a 100644
--- a/espanso/src/patch/patches/linux/thunderbird_x11.rs
+++ b/espanso/src/patch/patches/linux/thunderbird_x11.rs
@@ -19,6 +19,8 @@
 
 use std::sync::Arc;
 
+use espanso_config::config::Backend;
+
 use crate::patch::patches::{PatchedConfig, Patches};
 use crate::patch::PatchDefinition;
 
@@ -33,6 +35,9 @@ pub fn patch() -> PatchDefinition {
         name,
         Patches {
           paste_shortcut: Some(Some("CTRL+SHIFT+V".to_string())),
+          backend: Some(Backend::Clipboard),
+          key_delay: Some(Some(15)),
+          inject_delay: Some(Some(15)),
           ..Default::default()
         },
       ))