diff --git a/acme_common/Cargo.toml b/acme_common/Cargo.toml
index 586a504..8564b49 100644
--- a/acme_common/Cargo.toml
+++ b/acme_common/Cargo.toml
@@ -13,6 +13,7 @@ name = "acme_common"
 
 [dependencies]
 base64 = "0.10"
+daemonize = "0.4"
 handlebars = "2.0.0-beta.1"
 http_req = "0.4"
 openssl = "0.10"
diff --git a/acme_common/src/lib.rs b/acme_common/src/lib.rs
index cb5e209..33c7625 100644
--- a/acme_common/src/lib.rs
+++ b/acme_common/src/lib.rs
@@ -1,6 +1,21 @@
+use daemonize::Daemonize;
+
 pub mod error;
 pub mod gen;
 
 pub fn b64_encode<T: ?Sized + AsRef<[u8]>>(input: &T) -> String {
     base64::encode_config(input, base64::URL_SAFE_NO_PAD)
 }
+
+pub fn init_server(foreground: bool, pid_file: &str) {
+    if !foreground {
+        let daemonize = Daemonize::new().pid_file(pid_file);
+        match daemonize.start() {
+            Ok(_) => {}
+            Err(e) => {
+                eprintln!("Error: {}", e);
+                std::process::exit(3);
+            }
+        }
+    }
+}
diff --git a/acmed/Cargo.toml b/acmed/Cargo.toml
index 691981a..33cae5c 100644
--- a/acmed/Cargo.toml
+++ b/acmed/Cargo.toml
@@ -14,7 +14,6 @@ build = "build.rs"
 [dependencies]
 acme_common = { path = "../acme_common" }
 clap = "2.32"
-daemonize = "0.4"
 env_logger = "0.6"
 handlebars = "2.0.0-beta.1"
 http_req = "0.4"
diff --git a/acmed/src/main.rs b/acmed/src/main.rs
index c271311..aa957d3 100644
--- a/acmed/src/main.rs
+++ b/acmed/src/main.rs
@@ -1,6 +1,6 @@
 use crate::main_event_loop::MainEventLoop;
+use acme_common::init_server;
 use clap::{App, Arg};
-use daemonize::Daemonize;
 use log::{error, LevelFilter};
 
 mod acme_proto;
@@ -92,17 +92,10 @@ fn main() {
         }
     };
 
-    if !matches.is_present("foregroung") {
-        let pid_file = matches.value_of("pid-file").unwrap_or(DEFAULT_PID_FILE);
-        let daemonize = Daemonize::new().pid_file(pid_file);
-        match daemonize.start() {
-            Ok(_) => {}
-            Err(e) => {
-                eprintln!("Error: {}", e);
-                std::process::exit(3);
-            }
-        }
-    }
+    init_server(
+        matches.is_present("foregroung"),
+        matches.value_of("pid-file").unwrap_or(DEFAULT_PID_FILE),
+    );
 
     let config_file = matches.value_of("config").unwrap_or(DEFAULT_CONFIG_FILE);
     let mut srv = match MainEventLoop::new(&config_file) {