diff --git a/TermTk/TTkWidgets/TTkTerminal/terminal_screen.py b/TermTk/TTkWidgets/TTkTerminal/terminal_screen.py
index a777b80c..daf75621 100644
--- a/TermTk/TTkWidgets/TTkTerminal/terminal_screen.py
+++ b/TermTk/TTkWidgets/TTkTerminal/terminal_screen.py
@@ -81,6 +81,10 @@ class _TTkTerminalScreen(_TTkTerminalScreen_CSI, _TTkTerminalScreen_C1):
         return self._terminalCursor
 
     def resize(self, w, h):
+        # I normalize the size to the default terminal
+        # to avoid negative or zerosized term
+        w = max(80,w)
+        h = max(24,h)
         ow, oh = self._w, self._h
         # st,sb = self._scrollingRegion
         # if oh <= h: # Terminal height decreasing
@@ -94,13 +98,13 @@ class _TTkTerminalScreen(_TTkTerminalScreen_CSI, _TTkTerminalScreen_C1):
         newCanvas = TTkCanvas(width=w, height=h)
         s = (0,0,w,h)
         newCanvas.paintCanvas(self._canvas,s,s,s)
+        self._canvas = newCanvas
 
         self._canvasNewLine  += [True]*h
         self._canvasLineSize += [0]*h
         self._canvasNewLine  = self._canvasNewLine[:h]
         self._canvasLineSize = self._canvasLineSize[:h]
 
-        self._canvas = newCanvas
         x,y = self._terminalCursor
         self._terminalCursor = (max(0,min(x,w-1)),max(0,min(y,h-1)))
 
@@ -109,6 +113,7 @@ class _TTkTerminalScreen(_TTkTerminalScreen_CSI, _TTkTerminalScreen_C1):
         w,h = self._w, self._h
         st,sb = self._scrollingRegion
         self._last = txt[-1] if txt else None
+        # TTkLog.error(f"P: {x=} {y=} {w=} {h=} {len(txt)=}")
 
         for bi, tout in enumerate(txt.split('\a')): # grab the bells
             if bi:
diff --git a/TermTk/TTkWidgets/TTkTerminal/terminal_screen_CSI.py b/TermTk/TTkWidgets/TTkTerminal/terminal_screen_CSI.py
index 41137366..77c683e7 100644
--- a/TermTk/TTkWidgets/TTkTerminal/terminal_screen_CSI.py
+++ b/TermTk/TTkWidgets/TTkTerminal/terminal_screen_CSI.py
@@ -473,7 +473,8 @@ class _TTkTerminalScreen_CSI():
     # CSI Ps d  Line Position Absolute  [row] (default = [1,column]) (VPA).
     def _CSI_d_VPA(self, ps, _):
         x,y = self._terminalCursor
-        self._terminalCursor = (x,ps-1)
+        w,h = self._w, self._h
+        self._terminalCursor = (x,max(0,min(h-1,ps-1)))
 
     # CSI Ps e  Line Position Relative  [rows] (default = [row+1,column])
     #           (VPR).
diff --git a/TermTk/TTkWidgets/TTkTerminal/terminalview.py b/TermTk/TTkWidgets/TTkTerminal/terminalview.py
index da55898d..ba43ce14 100644
--- a/TermTk/TTkWidgets/TTkTerminal/terminalview.py
+++ b/TermTk/TTkWidgets/TTkTerminal/terminalview.py
@@ -159,8 +159,6 @@ class TTkTerminalView(TTkAbstractScrollView, _TTkTerminal_CSI_DEC):
     def _resizeScreen(self):
         w,h = self.size()
         self._screen_current.resize(w,h)
-
-    def resizeEvent(self, w: int, h: int):
         if self._fd:
             # s = struct.pack('HHHH', 0, 0, 0, 0)
             # t = fcntl.ioctl(sys.stdout.fileno(), termios.TIOCGWINSZ, s)
@@ -169,6 +167,8 @@ class TTkTerminalView(TTkAbstractScrollView, _TTkTerminal_CSI_DEC):
             t = fcntl.ioctl(self._fd, termios.TIOCSWINSZ, s)
             # termios.tcsetwinsize(self._fd,(h,w))
 
+    def resizeEvent(self, w: int, h: int):
+
         if self._resize_pipe:
             os.write(self._resize_pipe[1], b'resize')
 
diff --git a/tests/timeit/20.thread.01.muitex.py b/tests/timeit/20.thread.01.mutex.py
similarity index 94%
rename from tests/timeit/20.thread.01.muitex.py
rename to tests/timeit/20.thread.01.mutex.py
index b451339b..3b528865 100755
--- a/tests/timeit/20.thread.01.muitex.py
+++ b/tests/timeit/20.thread.01.mutex.py
@@ -35,7 +35,8 @@ def test1():
     ret = 1
     mutex.acquire()
     for x in test:
-        ret = max(ret,x*x)
+        # ret = max(ret,x*x)
+        ret += x # max(ret,x*x)
     mutex.release()
     return ret
 
@@ -43,7 +44,8 @@ def test2():
     ret = 1
     for x in test:
         mutex.acquire()
-        ret = max(ret,x*x)
+        # ret = max(ret,x*x)
+        ret += x # max(ret,x*x)
         mutex.release()
     return ret