diff --git a/src/backend/core/datatypes/Double2StringFilter.cpp b/src/backend/core/datatypes/Double2StringFilter.cpp
index 692973bcf..08d94ac9e 100644
--- a/src/backend/core/datatypes/Double2StringFilter.cpp
+++ b/src/backend/core/datatypes/Double2StringFilter.cpp
@@ -1,133 +1,133 @@
 /***************************************************************************
     File                 : Double2StringFilter.cpp
     Project              : AbstractColumn
     --------------------------------------------------------------------
     Copyright            : (C) 2007 by Knut Franke, Tilman Benkert
     Email (use @ for *)  : knut.franke*gmx.de, thzs@gmx.net
     Description          : Locale-aware conversion filter double -> QString.
 
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *  This program is free software; you can redistribute it and/or modify   *
  *  it under the terms of the GNU General Public License as published by   *
  *  the Free Software Foundation; either version 2 of the License, or      *
  *  (at your option) any later version.                                    *
  *                                                                         *
  *  This program is distributed in the hope that it will be useful,        *
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  *  GNU General Public License for more details.                           *
  *                                                                         *
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program; if not, write to the Free Software           *
  *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
  *   Boston, MA  02110-1301  USA                                           *
  *                                                                         *
  ***************************************************************************/
 
 #include "Double2StringFilter.h"
 #include "backend/lib/XmlStreamReader.h"
 #include <QXmlStreamWriter>
 #include <QUndoCommand>
 
 #include <KLocalizedString>
 
 class Double2StringFilterSetFormatCmd : public QUndoCommand {
 public:
 	Double2StringFilterSetFormatCmd(Double2StringFilter* target, char new_format);
 
 	void redo() override;
 	void undo() override;
 
 private:
 	Double2StringFilter* m_target;
 	char m_other_format;
 };
 
 class Double2StringFilterSetDigitsCmd : public QUndoCommand {
 public:
 	Double2StringFilterSetDigitsCmd(Double2StringFilter* target, int new_digits);
 
 	void redo() override;
 	void undo() override;
 
 private:
 	Double2StringFilter* m_target;
 	int m_other_digits;
 };
 
 void Double2StringFilter::writeExtraAttributes(QXmlStreamWriter * writer) const {
 	writer->writeAttribute("format", QString(QChar(numericFormat())));
 	writer->writeAttribute("digits", QString::number(numDigits()));
 }
 
 bool Double2StringFilter::load(XmlStreamReader* reader, bool preview) {
 	if (preview)
 		return true;
 
 	QXmlStreamAttributes attribs = reader->attributes();
 	QString format_str = attribs.value(reader->namespaceUri().toString(), "format").toString();
 	QString digits_str = attribs.value(reader->namespaceUri().toString(), "digits").toString();
 
 	if (AbstractSimpleFilter::load(reader, preview)) {
 		bool ok;
 		int digits = digits_str.toInt(&ok);
 		if (ok)
 			setNumDigits(digits);
 
-		if (format_str.size() != 1)
+		if (format_str.size() >= 1)
 			setNumericFormat(format_str.at(0).toLatin1());
 	} else
 		return false;
 
 	return !reader->hasError();
 }
 
 void Double2StringFilter::setNumericFormat(char format) {
 	exec(new Double2StringFilterSetFormatCmd(this, format));
 }
 
 void Double2StringFilter::setNumDigits(int digits) {
 	exec(new Double2StringFilterSetDigitsCmd(this, digits));
 }
 
 Double2StringFilterSetFormatCmd::Double2StringFilterSetFormatCmd(Double2StringFilter* target, char new_format)
 	: m_target(target), m_other_format(new_format) {
 	if (m_target->parentAspect())
 		setText(i18n("%1: set numeric format to '%2'", m_target->parentAspect()->name(), new_format));
 	else
 		setText(i18n("set numeric format to '%1'", new_format));
 }
 
 void Double2StringFilterSetFormatCmd::redo() {
 	char tmp = m_target->m_format;
 	m_target->m_format = m_other_format;
 	m_other_format = tmp;
 	emit m_target->formatChanged();
 }
 
 void Double2StringFilterSetFormatCmd::undo() {
 	redo();
 }
 
 Double2StringFilterSetDigitsCmd::Double2StringFilterSetDigitsCmd(Double2StringFilter* target, int new_digits)
 	: m_target(target), m_other_digits(new_digits) {
 	if (m_target->parentAspect())
 		setText(i18n("%1: set decimal digits to %2", m_target->parentAspect()->name(), new_digits));
 	else
 		setText(i18n("set decimal digits to %1", new_digits));
 }
 
 void Double2StringFilterSetDigitsCmd::redo() {
 	int tmp = m_target->m_digits;
 	m_target->m_digits = m_other_digits;
 	m_other_digits = tmp;
 	emit m_target->digitsChanged();
 }
 
 void Double2StringFilterSetDigitsCmd::undo() {
 	redo();
 }