diff --git a/CommonConfig.cmake b/CommonConfig.cmake
index c75cc79..668906b 100644
--- a/CommonConfig.cmake
+++ b/CommonConfig.cmake
@@ -230,7 +230,7 @@
 		message(FATAL_ERROR "MCUBoot only supports RSA-2048 and RSA-3072 signature")
 	endif()
 	if (NOT DEFINED MCUBOOT_SIGNATURE_TYPE)
-		set(MCUBOOT_SIGNATURE_TYPE "RSA-2048")
+		set(MCUBOOT_SIGNATURE_TYPE "RSA-3072")
 	endif()
 	if (NOT ${MCUBOOT_UPGRADE_STRATEGY} STREQUAL "OVERWRITE_ONLY" AND
 		NOT ${MCUBOOT_UPGRADE_STRATEGY} STREQUAL "SWAP" AND