diff --git a/tests/TODO.md b/tests/TODO.md
index 49c3001..b969896 100644
--- a/tests/TODO.md
+++ b/tests/TODO.md
@@ -23,7 +23,7 @@ Source keys:
 - Malicious documents (very slow, might break the conversions)
 
 Destinations keys
-- empty, big enough
+[DONE] empty, big enough
 - empty, too small
 - broken
 - not empty
diff --git a/tests/run.sh b/tests/run.sh
index 6e0a6f2..43a0cbc 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -72,6 +72,7 @@ mount -o loop,offset=${OFFSET_VFAT_NORM} ${IMAGE_EXT4} ${SETUP_DIR}
 cp -rf content_img_vfat_norm/* ${SETUP_DIR}
 umount ${SETUP_DIR}
 
+chmod -w ${IMAGE}
 ./run.exp ${IMAGE} ${IMAGE_VFAT_NORM} ${IMAGE_DEST}
 sleep 10
 ./run.exp ${IMAGE} ${IMAGE_VFAT_PART} ${IMAGE_DEST}
@@ -87,4 +88,6 @@ sleep 10
 #./run.exp ${IMAGE} ${IMAGE_EXT4} ${IMAGE_DEST}
 
 
+#./run.exp ${IMAGE} ${IMAGE_VFAT_PART} ${IMAGE_DEST}
+chmod +w ${IMAGE}