diff --git a/bin/dunitrust-server/src/cli.rs b/bin/dunitrust-server/src/cli.rs
index 4e0ca9cae139e5ef739ca52359548bb0482baf95..eaf19610002b9078647a2a47b2df7d3c017f4834 100644
--- a/bin/dunitrust-server/src/cli.rs
+++ b/bin/dunitrust-server/src/cli.rs
@@ -33,6 +33,11 @@ use log::Level;
 use std::path::PathBuf;
 use structopt::StructOpt;
 
+// Default log level is "info".
+const LOG_LEVEL_DEFAULT: usize = 2;
+
+static LOG_LEVEL_NAMES: [&str; 5] = ["error", "warn", "info", "debug", "trace"];
+
 #[derive(StructOpt, Debug)]
 #[structopt(name = "durs", setting(structopt::clap::AppSettings::ColoredHelp))]
 /// Dunitrust command line options
@@ -46,10 +51,9 @@ pub struct DursCliOpt {
     /// Keypairs file path
     #[structopt(long = "keypairs-file", parse(from_os_str))]
     keypairs_file: Option<PathBuf>,
-    /// Set log level. (Defaults to INFO).
-    /// Available levels: [ERROR, WARN, INFO, DEBUG, TRACE]
-    #[structopt(short = "l", long = "logs", next_line_help = true)]
-    logs_level: Option<Level>,
+    /// Change logs level.
+    #[structopt(short = "l", long = "logs", default_value = LOG_LEVEL_NAMES[LOG_LEVEL_DEFAULT], possible_values = &LOG_LEVEL_NAMES)]
+    logs_level: Level,
     /// Print logs in standard output
     #[structopt(long = "log-stdout")]
     log_stdout: bool,
diff --git a/lib/core/core/src/commands/mod.rs b/lib/core/core/src/commands/mod.rs
index 0c51c03b966fd3f6b16bfcddd3bc0542702d61b1..44676b1610f5ceb7b03e98b6d040f10d4199b013 100644
--- a/lib/core/core/src/commands/mod.rs
+++ b/lib/core/core/src/commands/mod.rs
@@ -40,7 +40,7 @@ pub struct DursCoreOptions {
     /// Keypairs file path
     pub keypairs_file: Option<PathBuf>,
     /// Set log level.
-    pub logs_level: Option<Level>,
+    pub logs_level: Level,
     /// Print logs in standard output
     pub log_stdout: bool,
     /// Set a custom user profile name
diff --git a/lib/core/core/src/logger.rs b/lib/core/core/src/logger.rs
index 334d7142f8bd23fd4df5851d4e2e0262172f0136..b5f57123d8fe14b025a196dcc57d2094c382871d 100644
--- a/lib/core/core/src/logger.rs
+++ b/lib/core/core/src/logger.rs
@@ -66,10 +66,7 @@ pub fn init(
     }
 
     // Get log level filter
-    let logs_level_filter = durs_core_opts
-        .logs_level
-        .unwrap_or(Level::Info)
-        .to_level_filter();
+    let logs_level_filter = durs_core_opts.logs_level.to_level_filter();
 
     // Config loggers
     let loggers_common_config = fern::Dispatch::new()