diff --git a/Tools/autotest/arducopter.py b/Tools/autotest/arducopter.py
index 7f70a37a0f..1fab4c319e 100644
--- a/Tools/autotest/arducopter.py
+++ b/Tools/autotest/arducopter.py
@@ -1498,7 +1498,7 @@ class AutoTestCopter(vehicle_test_suite.TestSuite):
         self.load_fence("fence-in-middle-of-nowhere.txt")
 
         self.delay_sim_time(5) # let fence check run so it loads-from-eeprom
-        self.assert_prearm_failure("vehicle outside Polygon fence")
+        self.assert_prearm_failure("Vehicle breaching Polygon fence")
         self.progress("Failed to arm outside fence (good!)")
         self.clear_fence()
         self.delay_sim_time(5) # let fence breach clear
diff --git a/Tools/autotest/arduplane.py b/Tools/autotest/arduplane.py
index e734d4f83c..aa7acb0bad 100644
--- a/Tools/autotest/arduplane.py
+++ b/Tools/autotest/arduplane.py
@@ -1551,12 +1551,12 @@ class AutoTestPlane(vehicle_test_suite.TestSuite):
         self.delay_sim_time(2) # Allow breach to propagate
         self.assert_fence_enabled()
 
-        self.try_arm(False, "vehicle outside Min Alt fence")
+        self.try_arm(False, "Vehicle breaching Min Alt fence")
         self.do_fence_disable()
         self.set_parameter("FENCE_ALT_MIN", default_fence_alt_min)
 
         # Test arming outside inclusion zone
-        self.progress("Test arming while vehicle outside of inclusion zone")
+        self.progress("Test arming while Vehicle breaching of inclusion zone")
         self.set_parameter("FENCE_TYPE", 4) # Enables polygon fence types
         self.upload_fences_from_locations([(
             mavutil.mavlink.MAV_CMD_NAV_FENCE_POLYGON_VERTEX_INCLUSION, [
@@ -1570,7 +1570,7 @@ class AutoTestPlane(vehicle_test_suite.TestSuite):
         self.do_fence_enable()
         self.assert_fence_enabled()
         self.delay_sim_time(2) # Allow breach to propagate
-        self.try_arm(False, "vehicle outside Polygon fence")
+        self.try_arm(False, "Vehicle breaching Polygon fence")
         self.do_fence_disable()
         self.clear_fence()
 
@@ -1590,7 +1590,7 @@ class AutoTestPlane(vehicle_test_suite.TestSuite):
         self.do_fence_enable()
         self.assert_fence_enabled()
         self.delay_sim_time(2) # Allow breach to propagate
-        self.try_arm(False, "vehicle outside Polygon fence")
+        self.try_arm(False, "Vehicle breaching Polygon fence")
         self.do_fence_disable()
 
     def test_fence_breach_circle_at(self, loc, disable_on_breach=False):
diff --git a/Tools/autotest/rover.py b/Tools/autotest/rover.py
index 2016139371..cbb3cd8290 100644
--- a/Tools/autotest/rover.py
+++ b/Tools/autotest/rover.py
@@ -6674,10 +6674,10 @@ Brakes have negligible effect (with=%0.2fm without=%0.2fm delta=%0.2fm)
             ]),
         ])
 
-        self.assert_prearm_failure('vehicle outside Polygon fence', other_prearm_failures_fatal=False)
+        self.assert_prearm_failure('Vehicle breaching Polygon fence', other_prearm_failures_fatal=False)
         self.reboot_sitl()
 
-        self.assert_prearm_failure('vehicle outside Polygon fence', other_prearm_failures_fatal=False, timeout=120)
+        self.assert_prearm_failure('Vehicle breaching Polygon fence', other_prearm_failures_fatal=False, timeout=120)
 
         self.progress("Ensure we can arm when a polyfence fence is cleared when we've previously been in breach")
         self.clear_fence()
@@ -6693,7 +6693,7 @@ Brakes have negligible effect (with=%0.2fm without=%0.2fm delta=%0.2fm)
             ]),
         ])
         self.reboot_sitl()
-        self.assert_prearm_failure('vehicle outside Polygon fence', other_prearm_failures_fatal=False, timeout=120)
+        self.assert_prearm_failure('Vehicle breaching Polygon fence', other_prearm_failures_fatal=False, timeout=120)
         self.clear_fence()
         self.wait_ready_to_arm()
 
@@ -6707,11 +6707,11 @@ Brakes have negligible effect (with=%0.2fm without=%0.2fm delta=%0.2fm)
                 self.offset_location_ne(here, 50, 20), # tl,
             ]),
         ])
-        self.assert_prearm_failure('vehicle outside Polygon fence', other_prearm_failures_fatal=False, timeout=120)
+        self.assert_prearm_failure('Vehicle breaching Polygon fence', other_prearm_failures_fatal=False, timeout=120)
         self.set_parameter('FENCE_TYPE', 2)
         self.wait_ready_to_arm()
         self.set_parameter('FENCE_TYPE', 6)
-        self.assert_prearm_failure('vehicle outside Polygon fence', other_prearm_failures_fatal=False, timeout=120)
+        self.assert_prearm_failure('Vehicle breaching Polygon fence', other_prearm_failures_fatal=False, timeout=120)
 
     def OpticalFlow(self):
         '''lightly test OpticalFlow'''