diff --git a/setup/so-functions b/setup/so-functions
index d8c86eda5..c80df2347 100755
--- a/setup/so-functions
+++ b/setup/so-functions
@@ -981,6 +981,7 @@ detect_os() {
 			UBVER=20.04
 			OS=ubuntu
 			is_ubuntu=true
+			is_deb=true
 			not_supported=true
 			unset is_supported
 		elif grep -q "UBUNTU_CODENAME=jammy" /etc/os-release; then