diff --git a/src/main.rs b/src/main.rs
index 940149c..71c8458 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -56,7 +56,7 @@ async fn main_core(args: Cli) -> Result<(), Box<dyn std::error::Error>> {
     env_logger::builder()
         .format_target(false)
         .filter_level(LevelFilter::Off)
-        .filter_module("deltio:*", map_log_level(args.log))
+        .filter_module("deltio", map_log_level(&args.log))
         .parse_default_env()
         .init();
 
@@ -92,7 +92,7 @@ async fn main_core(args: Cli) -> Result<(), Box<dyn std::error::Error>> {
 }
 
 /// Maps the log level argument to the `LevelFilter` enum.
-fn map_log_level(level: LogLevelArg) -> LevelFilter {
+fn map_log_level(level: &LogLevelArg) -> LevelFilter {
     match level {
         LogLevelArg::Off => LevelFilter::Off,
         LogLevelArg::Error => LevelFilter::Error,