diff --git a/diskimage_builder/elements/rhel-common/pre-install.d/01-module-configuration b/diskimage_builder/elements/rhel-common/pre-install.d/01-module-configuration
index 0d29557f5..b498e4780 100755
--- a/diskimage_builder/elements/rhel-common/pre-install.d/01-module-configuration
+++ b/diskimage_builder/elements/rhel-common/pre-install.d/01-module-configuration
@@ -14,6 +14,8 @@ fi
 set -eu
 set -o pipefail
 
+export DIB_DNF_MODULE_STREAMS=${DIB_DNF_MODULE_STREAMS:-}
+
 if [ "${YUM}" == "dnf" ]; then
     for m in ${DIB_DNF_MODULE_STREAMS}; do
         ${YUM} -y module disable ${m/:*/}