diff a/apachesolr_attachments.admin.inc b/apachesolr_attachments.admin.inc
64a65,71
>   $form['apachesolr_attachments_java_opts'] = array(
>     '#type' => 'textfield',
>     '#title' => t('Tika java opts'),
>     '#size' => 20,
>     '#description' => t("The options handed to CLI java, e.g. -Dfile.encoding=UTF8."),
>     '#default_value' => variable_get('apachesolr_attachments_java_opts', '-Dfile.encoding=UTF8'),
>   );
diff a/apachesolr_attachments.index.inc b/apachesolr_attachments.index.inc
130a131,132
>   $arguments = escapeshellarg(variable_get('apachesolr_attachments_java_opts', '-Dfile.encoding=UTF8'));
>   $arguments = preg_replace('/\s+-/', "' '-", $arguments);
132,133c134
<     escapeshellarg(variable_get('apachesolr_attachments_java_opts', '-Dfile.encoding=UTF8')) .
<     ' -cp ' . escapeshellarg($tika_path) . ' -jar ' . escapeshellarg($tika) .
---
>     $arguments . ' -cp ' . escapeshellarg($tika_path) . ' -jar ' . escapeshellarg($tika) .