diff --git a/meta-digi-arm/conf/machine/include/ccmp2.inc b/meta-digi-arm/conf/machine/include/ccmp2.inc
index 2b3a582db..74bffae44 100644
--- a/meta-digi-arm/conf/machine/include/ccmp2.inc
+++ b/meta-digi-arm/conf/machine/include/ccmp2.inc
@@ -108,6 +108,10 @@ ENCRYPT_SUFFIX ?= "_Encrypted"
 
 SIGN_ENABLE ?= "0"
 SIGN_SUFFIX ?= "_Signed"
+# Disable signature of coprocessor firmware
+SIGN_COPRO_ENABLE = "0"
+# Disable encryption of coprocessor firmware
+ENCRYPT_COPRO_ENABLE = "0"
 
 # =========================================================================
 # Debug trace