diff --git a/boot/zephyr/prj.conf b/boot/zephyr/prj.conf
index 7f15372..0c61b0f 100644
--- a/boot/zephyr/prj.conf
+++ b/boot/zephyr/prj.conf
@@ -33,3 +33,5 @@
 CONFIG_LOG=y
 ### Ensure Zephyr logging changes don't use more resources
 CONFIG_LOG_DEFAULT_LEVEL=0
+### Decrease footprint by ~4 KB in comparison to CBPRINTF_COMPLETE=y
+CONFIG_CBPRINTF_NANO=y