diff --git a/src/data/config.rs b/src/data/config.rs
index ab6d21f..a4f5c78 100644
--- a/src/data/config.rs
+++ b/src/data/config.rs
@@ -60,7 +60,7 @@ static mut CONF: Option<Config> = None;
 
 impl Config {
     fn yaml_str(parsed: &Yaml, name: &str) -> String {
-        match &parsed[name] {
+        let val = match &parsed[name] {
             Yaml::Real(r) | Yaml::String(r) => r.to_string(),
             Yaml::Integer(i) => i.to_string(),
             Yaml::Boolean(true) => "true".to_string(),
@@ -71,7 +71,14 @@ impl Config {
             Yaml::BadValue => {
                 panic!("{} is missing", name);
             }
-        }.to_string()
+        }.to_string();
+
+        // Check if we have to get an environment variable
+        if val.starts_with("$") {
+            std::env::var(&val[1..]).unwrap()
+        } else {
+            val
+        }
     }
 
     fn yaml_u64(parsed: &Yaml, name: &str) -> u64 {