diff --git a/subsys/modem/backends/modem_backend_tty.c b/subsys/modem/backends/modem_backend_tty.c
index 8375183be48..e511150ae9d 100644
--- a/subsys/modem/backends/modem_backend_tty.c
+++ b/subsys/modem/backends/modem_backend_tty.c
@@ -7,7 +7,7 @@
 #include <zephyr/modem/backend/tty.h>
 
 #include <zephyr/logging/log.h>
-LOG_MODULE_REGISTER(modem_backend_tty);
+LOG_MODULE_REGISTER(modem_backend_tty, CONFIG_MODEM_MODULES_LOG_LEVEL);
 
 #include <fcntl.h>
 #include <unistd.h>
diff --git a/subsys/modem/backends/modem_backend_uart.c b/subsys/modem/backends/modem_backend_uart.c
index a8348b0b8a0..b77a7331899 100644
--- a/subsys/modem/backends/modem_backend_uart.c
+++ b/subsys/modem/backends/modem_backend_uart.c
@@ -10,7 +10,7 @@
 #include <zephyr/modem/backend/uart.h>
 
 #include <zephyr/logging/log.h>
-LOG_MODULE_REGISTER(modem_backend_uart);
+LOG_MODULE_REGISTER(modem_backend_uart, CONFIG_MODEM_MODULES_LOG_LEVEL);
 
 #include <string.h>
 
diff --git a/subsys/modem/backends/modem_backend_uart_async.c b/subsys/modem/backends/modem_backend_uart_async.c
index 0aa88ccd48c..107f5e4290e 100644
--- a/subsys/modem/backends/modem_backend_uart_async.c
+++ b/subsys/modem/backends/modem_backend_uart_async.c
@@ -7,7 +7,7 @@
 #include "modem_backend_uart_async.h"
 
 #include <zephyr/logging/log.h>
-LOG_MODULE_DECLARE(modem_backend_uart);
+LOG_MODULE_DECLARE(modem_backend_uart, CONFIG_MODEM_MODULES_LOG_LEVEL);
 
 #include <zephyr/kernel.h>
 #include <string.h>
diff --git a/subsys/modem/backends/modem_backend_uart_isr.c b/subsys/modem/backends/modem_backend_uart_isr.c
index 8a7075e3519..9eed7913496 100644
--- a/subsys/modem/backends/modem_backend_uart_isr.c
+++ b/subsys/modem/backends/modem_backend_uart_isr.c
@@ -7,7 +7,7 @@
 #include "modem_backend_uart_isr.h"
 
 #include <zephyr/logging/log.h>
-LOG_MODULE_DECLARE(modem_backend_uart);
+LOG_MODULE_DECLARE(modem_backend_uart, CONFIG_MODEM_MODULES_LOG_LEVEL);
 
 #include <string.h>