diff --git a/src/fgt/edit_quality/qualitymapperdialog.cpp b/src/fgt/edit_quality/qualitymapperdialog.cpp
index ce90da942..68f5f2546 100644
--- a/src/fgt/edit_quality/qualitymapperdialog.cpp
+++ b/src/fgt/edit_quality/qualitymapperdialog.cpp
@@ -1271,14 +1271,11 @@ void QualityMapperDialog::updateXQualityLabel(float xPos)
 	_currentTfHandleQualityValue.setNum(relative2QualityValf(xPos, ui.minSpinBox->value(), ui.maxSpinBox->value(), exp));
 	if (_currentTfHandleQualityValue.size() < QUALITY_LABEL_DIGITS_NUM)
 	{
-		int pos = 0;
 		QChar paddedZeros[] = {'0','0','0','0','0','0'};
-		if((pos = _currentTfHandleQualityValue.indexOf('.')) == -1)
-		{
+		if(_currentTfHandleQualityValue.indexOf('.') == -1)
 			_currentTfHandleQualityValue.append('.');
-			pos = _currentTfHandleQualityValue.size() - 1;
-		}
-			_currentTfHandleQualityValue.insert(pos, paddedZeros, QUALITY_LABEL_DIGITS_NUM-_currentTfHandleQualityValue.size());
+		if ((QUALITY_LABEL_DIGITS_NUM - _currentTfHandleQualityValue.size()) > 0)
+			_currentTfHandleQualityValue.insert(_currentTfHandleQualityValue.size(), paddedZeros, QUALITY_LABEL_DIGITS_NUM-_currentTfHandleQualityValue.size());
 	}
 	ui.xQualityLabel->setText(_currentTfHandleQualityValue);
 }
diff --git a/src/fgt/edit_quality/qualitymapperdialog.h b/src/fgt/edit_quality/qualitymapperdialog.h
index 92241e60f..a0d154cba 100644
--- a/src/fgt/edit_quality/qualitymapperdialog.h
+++ b/src/fgt/edit_quality/qualitymapperdialog.h
@@ -27,8 +27,8 @@ FIRST RELEASE
 
 ****************************************************************************/
 
-#ifndef QUALITYMAPPERDIALOG_H
-#define QUALITYMAPPERDIALOG_H
+#ifndef _QUALITYMAPPER_DIALOG_H_
+#define _QUALITYMAPPER_DIALOG_H_
 
 #include <QDockWidget>
 #include <QGraphicsItem>