diff --git a/configure.ac b/configure.ac
index d9c2eee..c94dc83 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,8 +9,8 @@
 # change this:
 m4_define(x_package_name, webtester) # project's name
 m4_define(x_major, 3) # project's major version
-m4_define(x_minor, 0) # project's minor version
-m4_define(x_least_diff, 123)
+m4_define(x_minor, 1) # project's minor version
+m4_define(x_least_diff, 129)
 
 # never edit this block:
 m4_include(ax_init_standard_project.m4)
diff --git a/etc/wt-mode.el b/etc/wt-mode.el
index 23f0977..f2e5ac8 100644
--- a/etc/wt-mode.el
+++ b/etc/wt-mode.el
@@ -25,7 +25,7 @@
 ;;   echo $(webrunner -h | sed -n 's,  COMMAND: ,,p') | sed 's, ,\\\\|,g'
 (defconst wt-font-lock-keywords
   (list
-   '("^ *\\(auth\\|ca-certificate\\|call\\|case\\|default\\|check\\|clear-cookies\\|click\\|clicktype\\|client-certificate\\|do\\|download\\|echo\\|execute\\|exists\\|exit\\|expect\\|fail\\|for\\|function\\|if\\|else\\|while\\|ignore\\|unignore\\|ignoreto\\|include\\|label\\|load\\|not\\|offline-storage-path\\|open\\|screenshot\\|set\\|setvalue\\|sleep\\|testcase\\|testsuite\\|timeout\\|unset\\|upload\\)\\b" . font-lock-builtin-face)
+   '("^ *\\(auth\\|ca-certificate\\|call\\|case\\|default\\|check\\|clear-cookies\\|click\\|clicktype\\|client-certificate\\|do\\|download\\|echo\\|execute\\|exists\\|exit\\|expect\\|fail\\|for\\|function\\|if\\|else\\|while\\|ignore\\|unignore\\|ignoreto\\|include\\|label\\|load\\|not\\|offline-storage-path\\|open\\|screenshot\\|set\\|setvalue\\|sleep\\|testcase\\|testsuite\\|timeout\\|timeout-false\\|unset\\|upload\\)\\b" . font-lock-builtin-face)
    '("^ *#.*$" . font-lock-comment-face))
   "Highlighting expressions for Webtester")
 
diff --git a/src/commands.hxx b/src/commands.hxx
index 6acf0c7..92f3885 100644
--- a/src/commands.hxx
+++ b/src/commands.hxx
@@ -495,7 +495,9 @@ class Script: public QObject {
   public:
     Script():
         _step(0), _clicktype(JAVASCRIPT_CLICK),
-        _screenshots(true), _defaultTimeout(20) {
+        _screenshots(true),
+        _defaultTimeout(10),
+        _defaultTimeoutFalse(3) {
       initPrototypes();
     }
     Script(const Script& o):
@@ -599,6 +601,7 @@ class Script: public QObject {
       _variables.clear();
       _rvariables.clear();
       _timeout = _defaultTimeout;
+      _timeoutFalse = _defaultTimeoutFalse;
       _step = 0;
       _clicktype = JAVASCRIPT_CLICK;
     }
@@ -651,7 +654,8 @@ class Script: public QObject {
       bool res(true);
       _step = 0;
       _testsuites = testsuites;
-      _timeout = _defaultTimeout; // defaults to 20s
+      _timeout = _defaultTimeout;
+      _timeoutFalse = _defaultTimeoutFalse;
       _ignoreSignalsUntil.clear();
       addSignals(frame);
       _screenshots = screenshots;
@@ -929,7 +933,9 @@ class Script: public QObject {
       _variables = o._variables;
       _rvariables = o._rvariables;
       _timeout = o._timeout;
+      _timeoutFalse = o._timeoutFalse;
       _defaultTimeout = o._timeout;
+      _defaultTimeoutFalse = o._timeoutFalse;
       _clicktype = o._clicktype;
       _testsuites = o._testsuites;
       _testclass = o._testclass;
@@ -965,9 +971,18 @@ class Script: public QObject {
     int timeout() {
       return _timeout;
     }
+    void timeoutFalse(int t) {
+      _timeoutFalse = t;
+    }
+    int timeoutFalse() {
+      return _timeoutFalse;
+    }
     void defaultTimeout(int t) {
       _defaultTimeout = t;
     }
+    void defaultTimeoutFalse(int t) {
+      _defaultTimeoutFalse = t;
+    }
     void auth(const QString& realm, const QString& username, const QString& password) {
       if (!username.isEmpty() && !password.isEmpty())
         _auth[realm] = {username, password};
@@ -1202,7 +1217,9 @@ class Script: public QObject {
     QMap<LenString, LenString> _rvariables; ///< reverse variable mapping
     QMap<QString, std::shared_ptr<Function> > _functions;
     int _timeout;
+    int _timeoutFalse;
     int _defaultTimeout;
+    int _defaultTimeoutFalse;
     ClickType _clicktype;
     QString _targetdir;
     std::shared_ptr<xml::Node> _testsuites; ///< only valid within run
@@ -1664,8 +1681,7 @@ class Not: public Command {
       Logger log(this, script);
       QString selector(script->replacevars(_selector));
       QString text(script->replacevars(_text));
-      QWebElement firstelement(find(frame, selector,
-                                    mrw::max(mrw::min(script->timeout()/3, 10), 2)));
+      QWebElement firstelement(find(frame, selector, script->timeoutFalse()-1));
       for (QWebElement element: frame->findAllElements(selector)) {
         if (text.isEmpty())
           error(log, AssertionFailed("element must not exists: "+selector));
@@ -1979,7 +1995,7 @@ class Timeout: public Command {
       return
         tag()+" <seconds>"
         "\n\n--\n\n"
-        "Set the timeout in seconds (defaults to 10).";
+        "Set the timeout in seconds.";
     }
     QString command() const {
       return tag()+" "+_timeout;
@@ -1997,6 +2013,47 @@ class Timeout: public Command {
       if (!ok) error(log, BadArgument(script->replacevars(_timeout)
                                       +" should be a number of seconds"));
       script->timeout(timeout);
+      script->defaultTimeout(timeout);
+      return true;
+    }
+  private:
+    QString _timeout;
+};
+
+class TimeoutFalse: public Command {
+  public:
+    QString tag() const {
+      return "timeout-false";
+    }
+    QString description() const {
+      return
+        tag()+" <seconds>"
+        "\n\n--\n\n"
+        "Set the timeout for negative testcases in seconds."
+        " Time to wait until a negative testcase is accepted. It is used in"
+        " commands such as not, if or while, where a fail is the expected or at"
+        " least a valid result. Normally, this timeout can be lower than the"
+        " normal timeout. This is, because to verify that something does not"
+        " exists, the test run has always to wait for the full timeout. So"
+        " setting this to a lower value increases the speed of the test run.";
+    }
+    QString command() const {
+      return tag()+" "+_timeout;
+    }
+    std::shared_ptr<Command> parse(Script*, QString args,
+                                   QStringList&, QString, int, int) {
+      std::shared_ptr<TimeoutFalse> cmd(new TimeoutFalse());
+      cmd->_timeout = args;
+      return cmd;
+    }
+    bool execute(Script* script, QWebFrame*) {
+      Logger log(this, script);
+      bool ok;
+      int timeout(script->replacevars(_timeout).toInt(&ok));
+      if (!ok) error(log, BadArgument(script->replacevars(_timeout)
+                                      +" should be a number of seconds"));
+      script->timeoutFalse(timeout);
+      script->defaultTimeoutFalse(timeout);
       return true;
     }
   private:
@@ -2371,8 +2428,7 @@ class If: public CommandContainer {
       QString selector(script->replacevars(_variable));
       bool check(false);
       if (_cmp=="->") {
-        QWebElement firstelement(find(frame, selector,
-                                      mrw::max(mrw::min(script->timeout()/3, 10), 2)));
+        QWebElement firstelement(find(frame, selector, script->timeoutFalse()-1));
         for (QWebElement element: frame->findAllElements(selector)) {
           if (value.isEmpty() || // just find element
               element.toOuterXml().indexOf(value)!=-1 ||
@@ -2478,8 +2534,7 @@ class While: public CommandContainer {
       for (bool check(true); check;) {
         if (_cmp=="->") {
           check = false;
-          QWebElement firstelement(find(frame, selector,
-                                        mrw::max(mrw::min(script->timeout()/3, 10), 2)));
+          QWebElement firstelement(find(frame, selector, script->timeoutFalse()-1));
           for (QWebElement element: frame->findAllElements(selector)) {
             if (value.isEmpty() || // just find element
                 element.toOuterXml().indexOf(value)!=-1 ||
@@ -2942,8 +2997,7 @@ class Case: public Command {
           log("terminate with default branch");
           check = true;
         } else if (condition.cmp=="->") {
-          QWebElement firstelement(find(frame, selector,
-                                        mrw::max(mrw::min(script->timeout()/3, 10), 2)));
+          QWebElement firstelement(find(frame, selector, script->timeoutFalse()-1));
           for (QWebElement element: frame->findAllElements(selector)) {
             if (value.isEmpty() || // just find element
                 element.toOuterXml().indexOf(value)!=-1 ||
@@ -3283,6 +3337,7 @@ inline void Script::initPrototypes() {
   add(new Set);
   add(new UnSet);
   add(new Timeout);
+  add(new TimeoutFalse);
   add(new CaCertificate);
   add(new ClientCertificate);
   add(new ::ClickType);
diff --git a/src/editor.hxx b/src/editor.hxx
index 54df68a..70ed974 100644
--- a/src/editor.hxx
+++ b/src/editor.hxx
@@ -19,7 +19,7 @@ class Highlighter: public QSyntaxHighlighter {
     void include(QString);
   public:
     Highlighter(QTextDocument *parent): QSyntaxHighlighter(parent) {
-      QString commands="auth|ca-certificate|call|case|default|check|clear-cookies|click|clicktype|client-certificate|do|download|echo|execute|exists|exit|expect|fail|for|function|if|else|while|ignore|unignore|ignoreto|include|label|load|not|offline-storage-path|open|screenshot|set|setvalue|sleep|testcase|testsuite|timeout|unset|upload";
+      QString commands="auth|ca-certificate|call|case|default|check|clear-cookies|click|clicktype|client-certificate|do|download|echo|execute|exists|exit|expect|fail|for|function|if|else|while|ignore|unignore|ignoreto|include|label|load|not|offline-storage-path|open|screenshot|set|setvalue|sleep|testcase|testsuite|timeout|timeout-false|unset|upload";
       _expressions<<Expression("^ *("+commands+")\\b").weight(QFont::Bold).fg(Qt::darkBlue)
                   <<Expression("^ *#.*$").weight(QFont::Bold).fg(Qt::black);
     }