diff --git a/system/uorb/Kconfig b/system/uorb/Kconfig
index 71f06e504..e72ae4f60 100644
--- a/system/uorb/Kconfig
+++ b/system/uorb/Kconfig
@@ -20,6 +20,7 @@ config UORB_STACKSIZE
 
 config UORB_FORMAT
 	bool
+	select LIBC_PRINT_EXTENSION
 	default n
 
 config UORB_LISTENER