diff --git a/src/installer.rs b/src/installer.rs
index 97b3a9c..2b6a0d5 100644
--- a/src/installer.rs
+++ b/src/installer.rs
@@ -23,10 +23,10 @@ pub fn install() -> Result<(), Error> {
     env::current_exe()
         .and_then(|p| fs::copy(p, "/usr/bin/vpncloud"))
         .map_err(|e| Error::FileIo("Failed to copy binary", e))?;
-    fs::set_permissions("/usr/bin/vpncloud", fs::Permissions::from_mode(755))
+    fs::set_permissions("/usr/bin/vpncloud", fs::Permissions::from_mode(0o755))
         .map_err(|e| Error::FileIo("Failed to set permissions for binary", e))?;
     fs::create_dir_all("/etc/vpncloud").map_err(|e| Error::FileIo("Failed to create config folder", e))?;
-    fs::set_permissions("/etc/vpncloud", fs::Permissions::from_mode(700))
+    fs::set_permissions("/etc/vpncloud", fs::Permissions::from_mode(0o700))
         .map_err(|e| Error::FileIo("Failed to set permissions for config folder", e))?;
     File::create("/etc/vpncloud/example.net.disabled")
         .and_then(|mut f| f.write_all(EXAMPLE_CONFIG))
diff --git a/src/wizard.rs b/src/wizard.rs
index c34c3d6..9d0dc3d 100644
--- a/src/wizard.rs
+++ b/src/wizard.rs
@@ -498,7 +498,7 @@ pub fn configure(name: Option<String>) -> Result<(), io::Error> {
         let f = fs::File::create(&file)?;
         serde_yaml::to_writer(f, &config_file)
             .map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "Failed to parse config file"))?;
-        fs::set_permissions(file, fs::Permissions::from_mode(600))?;
+        fs::set_permissions(file, fs::Permissions::from_mode(0o600))?;
         println!();
         println!("Use the following commands to control your VPN:");
         println!("  start the VPN:   sudo service vpncloud@{0} start", name);