1 files changed, 5 insertions, 3 deletions
diff --git a/examples/custom_logger.rs b/examples/custom_logger.rs
index 85de45b..3d4dc5b 100644
--- a/examples/custom_logger.rs
+++ b/examples/custom_logger.rs
@@ -13,17 +13,19 @@ If you only want to change the way logs are formatted, look at the `custom_forma
 #[macro_use]
 extern crate log;
 
-use env_logger::filter::Filter;
+use env_logger::filter::{Builder, Filter};
+
 use log::{Log, Metadata, Record, SetLoggerError};
 
+const FILTER_ENV: &'static str = "MY_LOG_LEVEL";
+
 struct MyLogger {
     inner: Filter,
 }
 
 impl MyLogger {
     fn new() -> MyLogger {
-        use env_logger::filter::Builder;
-        let mut builder = Builder::from_env("MY_LOG_LEVEL");
+        let mut builder = Builder::from_env(FILTER_ENV);
 
         MyLogger {
             inner: builder.build(),