diff --git a/pygatt/backends/gatttool/gatttool.py b/pygatt/backends/gatttool/gatttool.py
index 81d65719..e01a7ef9 100644
--- a/pygatt/backends/gatttool/gatttool.py
+++ b/pygatt/backends/gatttool/gatttool.py
@@ -78,6 +78,7 @@ def __init__(self, connection, parent_aliveness):
             'char_written': {
                 'patterns': [
                     r'Characteristic value (was )?written successfully',
+                    r'Characteristic Write Request failed: A timeout occured',
                 ]
             },
             'value': {
@@ -425,7 +426,7 @@ def connect(self, address, timeout=DEFAULT_CONNECT_TIMEOUT_S,
     def clear_bond(self, address=None):
         """Use the 'bluetoothctl' program to erase a stored BLE bond.
         """
-        con = pexpect.spawn('sudo bluetoothctl')
+        con = pexpect.spawn('bluetoothctl')
 
         try:
             con.expect("bluetooth", timeout=1)
diff --git a/pygatt/device.py b/pygatt/device.py
index ee3991eb..79bdb0fb 100644
--- a/pygatt/device.py
+++ b/pygatt/device.py
@@ -215,7 +215,7 @@ def subscribe(self, uuid, callback=None, indication=False):
                 self.char_write_handle(
                     characteristic_config_handle,
                     properties,
-                    wait_for_response=False
+                    wait_for_response=True
                 )
                 log.info("Subscribed to uuid=%s", uuid)
                 self._subscribed_handlers[value_handle] = properties
@@ -243,7 +243,7 @@ def unsubscribe(self, uuid):
                 self.char_write_handle(
                     characteristic_config_handle,
                     properties,
-                    wait_for_response=False
+                    wait_for_response=True
                 )
                 log.info("Unsubscribed from uuid=%s", uuid)
             else:
@@ -315,6 +315,6 @@ def resubscribe_all(self):
                 self.char_write_handle(
                     characteristic_config_handle,
                     properties,
-                    wait_for_response=False
+                    wait_for_response=True
                 )
                 log.info("Resubscribed to uuid=%s", uuid)
diff --git a/tests/gatttool/test_backend.py b/tests/gatttool/test_backend.py
index 6275566f..d216f158 100644
--- a/tests/gatttool/test_backend.py
+++ b/tests/gatttool/test_backend.py
@@ -26,7 +26,7 @@ def rate_limited_expect(*args, **kwargs):
             time.sleep(0.001)
             # This is hacky, but we sort the event list in the GATTTool receiver
             # and hard code where we expect the "Connected" event to be.
-            return 3
+            return 4
 
         self.spawn.return_value.expect.side_effect = rate_limited_expect
 
@@ -132,7 +132,7 @@ def rate_limited_expect_d(*args, **kwargs):
         def rate_limited_expect_c(*args, **kwargs):
             time.sleep(0.001)
             # hard code the "Connected" event
-            return 3
+            return 4
 
         address = "11:22:33:44:55:66"
         device = self.backend.connect(address, auto_reconnect=True)