diff --git a/data_from_portwine/scripts/functions_helper b/data_from_portwine/scripts/functions_helper
index 2813e982..8be40f76 100755
--- a/data_from_portwine/scripts/functions_helper
+++ b/data_from_portwine/scripts/functions_helper
@@ -143,8 +143,8 @@ try_copy_file_with_checksums () {
             || [[ "${PW_FILESYSTEM}" == "f2fs" ]] \
             || [[ "${PW_FILESYSTEM}" != "btrfs" ]]
             then
-                checksum1=($(sha256sum "$1"))
-                echo "${checksum1[0]}" > "$2.sha256sum"
+                checksum1="$(sha256sum "$1")"
+                echo "${checksum1// */}" > "$2.sha256sum"
             fi
             return 0
         else
@@ -155,28 +155,28 @@ try_copy_file_with_checksums () {
         || [[ "${PW_FILESYSTEM}" == "f2fs" ]] \
         || [[ "${PW_FILESYSTEM}" != "btrfs" ]]
         then
-            checksum1=($(sha256sum "$1"))
+            checksum1="$(sha256sum "$1")"
             if [[ ! -f "$2" ]] ; then
                 if cp -f "$1" "$2" ; then
-                    echo "${checksum1[0]}" > "$2.sha256sum"
+                    echo "${checksum1// */}" > "$2.sha256sum"
                     return 0
                 else
                     return 1
                 fi
             else
                 if [[ ! -f "$2.sha256sum" ]] ; then
-                    checksum2=($(sha256sum "$2"))
-                    echo "${checksum2[0]}" > "$2.sha256sum"
+                    checksum2="$(sha256sum "$2")"
+                    echo "${checksum2// */}" > "$2.sha256sum"
                 else
-                    checksum2=$(<"$2.sha256sum")
+                    checksum2="$(<"$2.sha256sum")"
                 fi
             fi
-            if [[ "${checksum1[0]}" == "${checksum2[0]}" ]] ; then
+            if [[ "${checksum1// */}" == "${checksum2// */}" ]] ; then
                 return 0
             else
                 try_remove_file "$2"
                 if cp -f "$1" "$2" ; then
-                    echo "${checksum1[0]}" > "$2.sha256sum"
+                    echo "${checksum1// */}" > "$2.sha256sum"
                     return 0
                 else
                     return 1