diff --git a/boot/zephyr/main.c b/boot/zephyr/main.c
index cee7505..0a0c874 100644
--- a/boot/zephyr/main.c
+++ b/boot/zephyr/main.c
@@ -59,7 +59,14 @@
 #define ZEPHYR_LOG_MODE_MINIMAL 1
 #endif
 
-#if defined(CONFIG_LOG) && !defined(CONFIG_LOG_IMMEDIATE) && \
+/* CONFIG_LOG_IMMEDIATE is the legacy Kconfig property,
+ * replaced by CONFIG_LOG_MODE_IMMEDIATE.
+ */
+#if (defined(CONFIG_LOG_MODE_IMMEDIATE) || defined(CONFIG_LOG_IMMEDIATE))
+#define ZEPHYR_LOG_MODE_IMMEDIATE 1
+#endif
+
+#if defined(CONFIG_LOG) && !defined(ZEPHYR_LOG_MODE_IMMEDIATE) && \
     !defined(ZEPHYR_LOG_MODE_MINIMAL)
 #ifdef CONFIG_LOG_PROCESS_THREAD
 #warning "The log internal thread for log processing can't transfer the log"\
@@ -83,7 +90,9 @@
 /* synchronous log mode doesn't need to be initalized by the application */
 #define ZEPHYR_BOOT_LOG_START() do { } while (false)
 #define ZEPHYR_BOOT_LOG_STOP() do { } while (false)
-#endif /* defined(CONFIG_LOG) && !defined(CONFIG_LOG_IMMEDIATE) */
+#endif /* defined(CONFIG_LOG) && !defined(ZEPHYR_LOG_MODE_IMMEDIATE) && \
+        * !defined(ZEPHYR_LOG_MODE_MINIMAL)
+	*/
 
 #ifdef CONFIG_SOC_FAMILY_NRF
 #include <helpers/nrfx_reset_reason.h>
@@ -303,7 +312,7 @@
 }
 #endif
 
-#if defined(CONFIG_LOG) && !defined(CONFIG_LOG_IMMEDIATE) &&\
+#if defined(CONFIG_LOG) && !defined(ZEPHYR_LOG_MODE_IMMEDIATE) && \
     !defined(CONFIG_LOG_PROCESS_THREAD) && !defined(ZEPHYR_LOG_MODE_MINIMAL)
 /* The log internal thread for log processing can't transfer log well as has too
  * low priority.
@@ -356,8 +365,9 @@
      */
     (void)k_sem_take(&boot_log_sem, K_FOREVER);
 }
-#endif/* defined(CONFIG_LOG) && !defined(CONFIG_LOG_IMMEDIATE) &&\
-        !defined(CONFIG_LOG_PROCESS_THREAD) */
+#endif /* defined(CONFIG_LOG) && !defined(ZEPHYR_LOG_MODE_IMMEDIATE) && \
+        * !defined(CONFIG_LOG_PROCESS_THREAD) && !defined(ZEPHYR_LOG_MODE_MINIMAL)
+        */
 
 #if defined(CONFIG_MCUBOOT_SERIAL) || defined(CONFIG_BOOT_USB_DFU_GPIO)
 static bool detect_pin(const char* port, int pin, uint32_t expected, int delay)