diff --git a/tools/pckgen.sh b/tools/pckgen.sh
index c93362f..902db8e 100755
--- a/tools/pckgen.sh
+++ b/tools/pckgen.sh
@@ -19,7 +19,7 @@ CAS_LICENSE_NAME="BSD-3-Clause"
 CAS_MODULES_DIR="extra/block/opencas"
 SUPPORTED_FROM_VERSION="20.03"
 THIS=$(basename "$0")
-ARCH="$(uname -i)"
+ARCH="$(uname -m)"
 SCRIPT_BASE_DIR=$(dirname $(realpath "$0"))
 RPM_SPEC_FILE="$SCRIPT_BASE_DIR/${THIS%.*}.d/rpm/CAS_NAME.spec"
 DEB_CONTROL_FILES_DIR="$SCRIPT_BASE_DIR/${THIS%.*}.d/deb/debian"