diff --git a/bin/src/command/requests.rs b/bin/src/command/requests.rs
index 10ec7bfd9..675d37ff7 100644
--- a/bin/src/command/requests.rs
+++ b/bin/src/command/requests.rs
@@ -15,7 +15,7 @@ use nom::{HexDisplay, Offset};
 use sozu_command_lib::{
     buffer::fixed::Buffer,
     config::Config,
-    logging,
+    logging::{self, change_log_level},
     parser::parse_several_requests,
     proto::command::{
         request::RequestType, response_content::ContentType, AggregatedMetrics, AvailableMetrics,
@@ -1195,10 +1195,7 @@ impl CommandServer {
         client_id: String,
     ) -> anyhow::Result<Option<Success>> {
         debug!("Changing main process log level to {}", logging_filter);
-        logging::LOGGER.with(|l| {
-            let directives = logging::parse_logging_spec(&logging_filter);
-            l.borrow_mut().set_directives(directives);
-        });
+        logging::LOGGER.with(|logger| change_log_level(logger, &logging_filter));
         // also change / set the content of RUST_LOG so future workers / main thread
         // will have the new logging filter value
         ::std::env::set_var("RUST_LOG", &logging_filter);
diff --git a/command/src/logging.rs b/command/src/logging.rs
index ebaece98e..c7efbb2ba 100644
--- a/command/src/logging.rs
+++ b/command/src/logging.rs
@@ -211,6 +211,11 @@ impl Logger {
     }
 }
 
+pub fn change_log_level(logger: &RefCell<Logger>, logging_filter: &str) {
+    let directives = parse_logging_spec(&logging_filter);
+    logger.borrow_mut().set_directives(directives);
+}
+
 pub enum LoggerBackend {
     Stdout(Stdout),
     Unix(UnixDatagram),
diff --git a/lib/src/http.rs b/lib/src/http.rs
index 19e649a5f..af12f199e 100644
--- a/lib/src/http.rs
+++ b/lib/src/http.rs
@@ -19,7 +19,7 @@ use slab::Slab;
 use time::{Duration, Instant};
 
 use sozu_command::{
-    logging,
+    logging::{self, change_log_level},
     proto::command::{
         request::RequestType, Cluster, HttpListenerConfig, ListenerType, RemoveListener,
         RequestHttpFrontend,
@@ -700,10 +700,8 @@ impl HttpProxy {
     }
 
     pub fn logging(&mut self, logging_filter: String) -> Result<(), ProxyError> {
-        logging::LOGGER.with(|l| {
-            let directives = logging::parse_logging_spec(&logging_filter);
-            l.borrow_mut().set_directives(directives);
-        });
+        logging::LOGGER.with(|logger| change_log_level(logger, &logging_filter));
+
         Ok(())
     }
 }
diff --git a/lib/src/https.rs b/lib/src/https.rs
index b1c867ba3..3d31e5199 100644
--- a/lib/src/https.rs
+++ b/lib/src/https.rs
@@ -31,7 +31,7 @@ use time::{Duration, Instant};
 use sozu_command::{
     certificate::Fingerprint,
     config::DEFAULT_CIPHER_SUITES,
-    logging,
+    logging::{self, change_log_level},
     proto::command::{
         request::RequestType, response_content::ContentType, AddCertificate, CertificateSummary,
         CertificatesByAddress, Cluster, HttpsListenerConfig, ListOfCertificatesByAddress,
@@ -913,10 +913,8 @@ impl HttpsProxy {
         &mut self,
         logging_filter: String,
     ) -> Result<Option<ResponseContent>, ProxyError> {
-        logging::LOGGER.with(|l| {
-            let directives = logging::parse_logging_spec(&logging_filter);
-            l.borrow_mut().set_directives(directives);
-        });
+        logging::LOGGER.with(|logger| change_log_level(logger, &logging_filter));
+
         Ok(None)
     }
 
diff --git a/lib/src/tcp.rs b/lib/src/tcp.rs
index 44cbbf581..2a2bc7c4c 100644
--- a/lib/src/tcp.rs
+++ b/lib/src/tcp.rs
@@ -18,7 +18,7 @@ use rusty_ulid::Ulid;
 use slab::Slab;
 use time::{Duration, Instant};
 
-use sozu_command::{proto::command::request::RequestType, ObjectKind};
+use sozu_command::{logging::change_log_level, proto::command::request::RequestType, ObjectKind};
 
 use crate::{
     backends::{Backend, BackendMap},
@@ -1363,10 +1363,8 @@ impl ProxyConfiguration for TcpProxy {
                     "{} changing logging filter to {}",
                     message.id, logging_filter
                 );
-                logging::LOGGER.with(|l| {
-                    let directives = logging::parse_logging_spec(&logging_filter);
-                    l.borrow_mut().set_directives(directives);
-                });
+                logging::LOGGER.with(|logger| change_log_level(logger, &logging_filter));
+
                 WorkerResponse::ok(message.id)
             }
             RequestType::AddCluster(cluster) => {