diff --git a/src/core/config.rs b/src/core/config.rs
index f2421fc..4fd5755 100644
--- a/src/core/config.rs
+++ b/src/core/config.rs
@@ -15,6 +15,7 @@ pub struct Configuration {
     longpress: u64,
     repeat: u64,
     layout: String,
+    extra_keys: Vec<String>,
     wayland_height: i32,
     wayland_im_enable: bool,
 }
@@ -46,6 +47,7 @@ impl Configuration {
             longpress: 600,
             repeat: 25,
             layout: String::from("latn_qwerty_us.xml"),
+            extra_keys: vec![ String::from("alt"), String::from("meta") ],
             wayland_height: 185,
             wayland_im_enable: true,
         };
@@ -80,6 +82,13 @@ impl Configuration {
                 cfg.layout = layout.to_string();
             }
 
+            let keys = yaml.get(&Yaml::String(String::from("extra_keys")));
+            if let Some(keys) = keys {
+                let keys = keys.as_vec().expect("Extra keys should be a list");
+                cfg.extra_keys = keys.iter().map(|y| String::from(y.as_str().unwrap())).collect();
+                cfg.extra_keys.sort_unstable();
+            }
+
             let wl = yaml.get(&Yaml::String(String::from("wayland")));
             if let Some(wl) = wl {
                 let wl = wl.as_hash().expect("Wayland configuration should be a YAML mapping");
@@ -108,6 +117,12 @@ impl Configuration {
         &self.layout
     }
 
+    #[inline(always)]
+    pub fn extra_keys(&self) -> &Vec<String>
+    {
+        &self.extra_keys
+    }
+
     #[inline(always)]
     pub fn wayland_height(&self) -> i32
     {