diff --git a/src/ksanewidget_p.cpp b/src/ksanewidget_p.cpp
--- a/src/ksanewidget_p.cpp
+++ b/src/ksanewidget_p.cpp
@@ -429,9 +429,9 @@
         }
     }
     // Color Options
-    for (int i = 0; i < basic_layout->count(); ++i) {
-        if (basic_layout->itemAt(i) && basic_layout->itemAt(i)->widget()) {
-            tmpOption = qobject_cast<KSaneOptionWidget *>(basic_layout->itemAt(i)->widget());
+    for (int i = 0; i < color_lay->count(); ++i) {
+        if (color_lay->itemAt(i) && color_lay->itemAt(i)->widget()) {
+            tmpOption = qobject_cast<KSaneOptionWidget *>(color_lay->itemAt(i)->widget());
             if (tmpOption) {
                 labelWidth = qMax(labelWidth, tmpOption->labelWidthHint());
             }
diff --git a/src/options/ksaneoptcombo.cpp b/src/options/ksaneoptcombo.cpp
--- a/src/options/ksaneoptcombo.cpp
+++ b/src/options/ksaneoptcombo.cpp
@@ -34,6 +34,7 @@
 
 #include <QDebug>
 #include <QIcon>
+#include <QLocale>
 
 namespace KSaneIface
 {
@@ -341,16 +342,16 @@
     case SANE_TYPE_INT:
         tmp = val.left(val.indexOf(QLatin1Char(' '))); // strip the unit
         // accept float formatting of the string
-        i = (int)(tmp.toFloat(&ok));
+        i = (int)(QLocale::system().toFloat(tmp,&ok));
         if (ok == false) {
             return false;
         }
         fromSANE_Word(data, i);
         data_ptr = data;
         break;
     case SANE_TYPE_FIXED:
         tmp = val.left(val.indexOf(QLatin1Char(' '))); // strip the unit
-        f = tmp.toFloat(&ok);
+        f = QLocale::system().toFloat(tmp,&ok);
         if (ok == false) {
             return false;
         }