diff --git a/install_nextcloud.sh b/install_nextcloud.sh
index 668ac60..98ca366 100755
--- a/install_nextcloud.sh
+++ b/install_nextcloud.sh
@@ -3470,6 +3470,7 @@ echo "# -----" >> $log_file
 
 # - Create base configuration
 # -
+REALPATH_DATA_DIR="$(realpath "${DATA_DIR}")"
 echo "" >> $log_file
 echo "# - Create base configuration (file 'config/config.php')" >> $log_file
 echo "# -" >> $log_file
@@ -3482,7 +3483,8 @@ sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" maintenance:install \\
    --database-host="${DATABASE_HOST}" \\
    --database-user="${DATABASE_USER}" \\
    --database-pass="${DATABASE_PASS}" \\
-   --admin-user="${ADMIN_USER}" --admin-pass="${ADMIN_PASS}"
+   --admin-user="${ADMIN_USER}" --admin-pass="${ADMIN_PASS}" \\
+    --data-dir="${REALPATH_DATA_DIR}"
 EOF
 sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" maintenance:install \
    --database="${DATABASE_TYPE}" \
@@ -3491,7 +3493,7 @@ sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" maintenance:install \
    --database-user="${DATABASE_USER}" \
    --database-pass="${DATABASE_PASS}" \
    --admin-user="${ADMIN_USER}" --admin-pass="${ADMIN_PASS}" \
-   --data-dir="${DATA_DIR}">> $log_file 2>&1
+   --data-dir="${REALPATH_DATA_DIR}">> $log_file 2>&1
 
 if [[ $? -eq 0 ]]; then
    echo_ok