diff --git a/export-image/03-set-partuuid/00-run.sh b/export-image/03-set-partuuid/00-run.sh
index ec4fd8a..1538c07 100755
--- a/export-image/03-set-partuuid/00-run.sh
+++ b/export-image/03-set-partuuid/00-run.sh
@@ -1,6 +1,6 @@
 #!/bin/bash -e
 
-IMG_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMX_SUFFIX}.img"
+IMG_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img"
 
 IMGID="$(dd if="${IMG_FILE}" skip=440 bs=1 count=4 2>/dev/null | xxd -e | cut -f 2 -d' ')"