diff --git a/tools/libinput-measure-touch-size.py b/tools/libinput-measure-touch-size.py
index 3997c038..957e6052 100755
--- a/tools/libinput-measure-touch-size.py
+++ b/tools/libinput-measure-touch-size.py
@@ -268,9 +268,13 @@ class Device(object):
                 if event.value > -1:
                     self.start_new_sequence(event.value)
                 else:
-                    s = self.current_sequence()
-                    s.finalize()
-                    print("\r{}".format(s))
+                    try:
+                        s = self.current_sequence()
+                        s.finalize()
+                        print("\r{}".format(s))
+                    except IndexError:
+                        # If the finger was down during start
+                        pass
         elif event.code == evdev.ecodes.ABS_MT_TOUCH_MAJOR:
                 self.touch.major = event.value
         elif event.code == evdev.ecodes.ABS_MT_TOUCH_MINOR:
@@ -280,11 +284,14 @@ class Device(object):
 
     def handle_syn(self, event):
         if self.touch.dirty:
-            self.current_sequence().append(self.touch)
-            print("\r{}".format(self.current_sequence()), end="")
-            self.touch = Touch(major=self.touch.major,
-                               minor=self.touch.minor,
-                               orientation=self.touch.orientation)
+            try:
+                self.current_sequence().append(self.touch)
+                print("\r{}".format(self.current_sequence()), end="")
+                self.touch = Touch(major=self.touch.major,
+                                   minor=self.touch.minor,
+                                   orientation=self.touch.orientation)
+            except IndexError:
+                pass
 
     def handle_event(self, event):
         if event.type == evdev.ecodes.EV_ABS:
diff --git a/tools/libinput-measure-touchpad-pressure.py b/tools/libinput-measure-touchpad-pressure.py
index 892b5e66..c04d8d6d 100755
--- a/tools/libinput-measure-touchpad-pressure.py
+++ b/tools/libinput-measure-touchpad-pressure.py
@@ -240,13 +240,21 @@ def handle_abs(device, event):
         if event.value > -1:
             device.start_new_sequence(event.value)
         else:
-            s = device.current_sequence()
-            s.finalize()
-            print("\r{}".format(s))
+            try:
+                s = device.current_sequence()
+                s.finalize()
+                print("\r{}".format(s))
+            except IndexError:
+                # If the finger was down at startup
+                pass
     elif event.code == evdev.ecodes.ABS_MT_PRESSURE:
-        s = device.current_sequence()
-        s.append(Touch(pressure=event.value))
-        print("\r{}".format(s), end="")
+        try:
+            s = device.current_sequence()
+            s.append(Touch(pressure=event.value))
+            print("\r{}".format(s), end="")
+        except IndexError:
+            # If the finger was down at startup
+            pass
 
 
 def handle_event(device, event):