diff --git a/examples/diesel/.env b/examples/diesel/.env
index aec4333..5fcb3f1 100644
--- a/examples/diesel/.env
+++ b/examples/diesel/.env
@@ -1 +1 @@
-DATABASE_URL=postgres://user:test@localhost:5534:5432/db
\ No newline at end of file
+DATABASE_URL=postgres://user:test@localhost:5534/db
\ No newline at end of file
diff --git a/examples/diesel/src/db.rs b/examples/diesel/src/db.rs
index f216279..0797c4d 100644
--- a/examples/diesel/src/db.rs
+++ b/examples/diesel/src/db.rs
@@ -4,6 +4,6 @@ use diesel::pg::PgConnection;
 
 pub fn establish_connection() -> PgConnection {
     let database_url = cfg::DATABASE_URL();
-    PgConnection::establish(&database_url)
+    PgConnection::establish(database_url)
         .expect(&format!("Error connecting to {}", database_url))
 }
diff --git a/examples/diesel/src/main.rs b/examples/diesel/src/main.rs
index 4617ac6..1adc4e6 100644
--- a/examples/diesel/src/main.rs
+++ b/examples/diesel/src/main.rs
@@ -13,7 +13,7 @@ use crate::models::*;
 
 
 config! {
-    DATABASE_URL: String,
+    DATABASE_URL,
 }
 
 
diff --git a/examples/hyper/src/main.rs b/examples/hyper/src/main.rs
index 95b8d4d..1de774c 100644
--- a/examples/hyper/src/main.rs
+++ b/examples/hyper/src/main.rs
@@ -18,7 +18,7 @@ config! {
             PORT => 8000,
         ),
 
-        JSON_API_URL < (
+        static JSON_API_URL < (
             HYPER_PREFER_SCHEMA,
             "://",
             HYPER_HOST,
diff --git a/examples/rocket/src/main.rs b/examples/rocket/src/main.rs
index eb5b510..c1ad78a 100644
--- a/examples/rocket/src/main.rs
+++ b/examples/rocket/src/main.rs
@@ -10,7 +10,7 @@ config! {
     ROCKET {
         HOST: String => "localhost",
         PORT: u16 => 9000,
-        BASE_URL: String => "/",
+        BASE_URL => "/",
     }
 }
 
@@ -24,6 +24,6 @@ fn main() {
     cfg::init();
 
     rocket::ignite()
-        .mount(&cfg::ROCKET::BASE_URL(), routes![index])
+        .mount(cfg::ROCKET::BASE_URL(), routes![index])
         .launch();
 }
\ No newline at end of file