diff --git a/functions/init.sh b/functions/init.sh
index 708e3d275..0182f413d 100755
--- a/functions/init.sh
+++ b/functions/init.sh
@@ -25,6 +25,12 @@ Init_config_data ()
 	Read_conffiles $(Common_conffiles)
 	Prepare_config
 
+	# Validating config
+	if [ "${CONFIG_VALIDATED}" != "true" ]; then
+		Validate_config
+		export CONFIG_VALIDATED="true"
+	fi
+
 	# Apt v2.0.1 introduced color support, but it needs to be explicitly enabled.
 	# This is done here so that the injection of the option does not get stored in the config file.
 	if [ "${_COLOR_OUT}" = "true" ] && [ "${_COLOR_ERR}" = "true" ]; then
diff --git a/scripts/build/build b/scripts/build/build
index dcc489618..f908fc91f 100755
--- a/scripts/build/build
+++ b/scripts/build/build
@@ -48,9 +48,6 @@ fi
 # Processing arguments and configuration files
 Init_config_data "${@}"
 
-# Validating config
-Validate_config
-
 Echo_message "live-build ${LIVE_BUILD_VERSION}"
 Echo_message "Building for a ${LB_MODE}/${LB_DISTRIBUTION_BINARY}/${LB_ARCHITECTURE} system"