1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/contrib/ddimage b/scripts/contrib/ddimage
index ab1d4c7b10..93ebeafc31 100755
--- a/scripts/contrib/ddimage
+++ b/scripts/contrib/ddimage
@@ -39,7 +39,7 @@ device_details() {
                 echo "   model: UNKNOWN"
         fi
         if [ -f "/sys/class/block/$DEV/size" ]; then
-                echo "    size: $[$(cat /sys/class/block/$DEV/size)*BLOCK_SIZE] bytes"
+                echo "    size: $(($(cat /sys/class/block/$DEV/size) * $BLOCK_SIZE)) bytes"
         else
                 echo "    size: UNKNOWN"
         fi