diff --git a/kitty/child.py b/kitty/child.py
index b24135e25..4e115fa83 100644
--- a/kitty/child.py
+++ b/kitty/child.py
@@ -75,9 +75,9 @@ class Child:
                 t.start()
             return pid
 
-    def resize_pty(self, w, h):
+    def resize_pty(self, w, h, ww, wh):
         if self.child_fd is not None:
-            fcntl.ioctl(self.child_fd, termios.TIOCSWINSZ, struct.pack('4H', h, w, 0, 0))
+            fcntl.ioctl(self.child_fd, termios.TIOCSWINSZ, struct.pack('4H', h, w, ww, wh))
 
     def hangup(self):
         if self.pid is not None:
diff --git a/kitty/window.py b/kitty/window.py
index 750642f14..e04be198e 100644
--- a/kitty/window.py
+++ b/kitty/window.py
@@ -65,7 +65,8 @@ class Window:
     def set_geometry(self, new_geometry):
         if self.needs_layout or new_geometry.xnum != self.screen.columns or new_geometry.ynum != self.screen.lines:
             self.screen.resize(new_geometry.ynum, new_geometry.xnum)
-            self.child.resize_pty(self.screen.columns, self.screen.lines)
+            self.child.resize_pty(self.screen.columns, self.screen.lines,
+                                  max(0, new_geometry.right - new_geometry.left), max(0, new_geometry.bottom - new_geometry.top))
             self.char_grid.resize(new_geometry)
             self.needs_layout = False
         else: