diff --git a/src/Mod/Part/Gui/DlgSettingsGeneral.cpp b/src/Mod/Part/Gui/DlgSettingsGeneral.cpp
index b44eac6ff7..bcfc6cbbe4 100644
--- a/src/Mod/Part/Gui/DlgSettingsGeneral.cpp
+++ b/src/Mod/Part/Gui/DlgSettingsGeneral.cpp
@@ -22,9 +22,11 @@
 
 
 #include "PreCompiled.h"
-#ifndef _PreComp_
-# include <QButtonGroup>
-#endif
+#ifndef _PreComp_
+# include <QButtonGroup>
+# include <QRegExp>
+# include <QRegExpValidator>
+#endif
 
 #include <Interface_Static.hxx>
 
@@ -95,6 +97,15 @@ DlgImportExportIges::DlgImportExportIges(QWidget* parent)
     bg = new QButtonGroup(this);
     bg->addButton(ui->radioButtonBRepOff, 0);
     bg->addButton(ui->radioButtonBRepOn, 1);
+
+    QRegExp rx;
+    rx.setPattern(QString::fromLatin1("[\\x00-\\x7F]+"));
+    QRegExpValidator* companyValidator = new QRegExpValidator(ui->lineEditCompany);
+    companyValidator->setRegExp(rx);
+    ui->lineEditCompany->setValidator(companyValidator);
+    QRegExpValidator* authorValidator = new QRegExpValidator(ui->lineEditAuthor);
+    authorValidator->setRegExp(rx);
+    ui->lineEditAuthor->setValidator(authorValidator);
 }
 
 /** 
@@ -188,6 +199,15 @@ DlgImportExportStep::DlgImportExportStep(QWidget* parent)
     ui = new Ui_DlgImportExportStep();
     ui->setupUi(this);
     ui->lineEditProduct->setReadOnly(true);
+
+    QRegExp rx;
+    rx.setPattern(QString::fromLatin1("[\\x00-\\x7F]+"));
+    QRegExpValidator* companyValidator = new QRegExpValidator(ui->lineEditCompany);
+    companyValidator->setRegExp(rx);
+    ui->lineEditCompany->setValidator(companyValidator);
+    QRegExpValidator* authorValidator = new QRegExpValidator(ui->lineEditAuthor);
+    authorValidator->setRegExp(rx);
+    ui->lineEditAuthor->setValidator(authorValidator);
 }
 
 /**