diff --git a/appium/webdriver/extensions/android/gsm.py b/appium/webdriver/extensions/android/gsm.py
index 56aedbd5..5dfc9a5d 100644
--- a/appium/webdriver/extensions/android/gsm.py
+++ b/appium/webdriver/extensions/android/gsm.py
@@ -113,7 +113,7 @@ def set_gsm_voice(self, state: str) -> Self:
         Returns:
             Union['WebDriver', 'Gsm']: Self instance
         """
-        ext_name = 'mobile: gmsVoice'
+        ext_name = 'mobile: gsmVoice'
         constants = extract_const_attributes(GsmVoiceState)
         if state not in constants.values():
             logger.warning(
diff --git a/appium/webdriver/extensions/android/power.py b/appium/webdriver/extensions/android/power.py
index 7b8b574e..6c0b1222 100644
--- a/appium/webdriver/extensions/android/power.py
+++ b/appium/webdriver/extensions/android/power.py
@@ -47,7 +47,7 @@ def set_power_ac(self, ac_state: str) -> Self:
 
         Android only.
 
-        Requires the Appium driver to support the `mobile: powerAC` execute method.
+        Requires the Appium driver to support the `mobile: powerAc` execute method.
 
         Args:
             ac_state: The power ac state to be set. Use `Power.AC_OFF`, `Power.AC_ON`
@@ -59,7 +59,7 @@ def set_power_ac(self, ac_state: str) -> Self:
         Returns:
             Union['WebDriver', 'Power']: Self instance
         """
-        ext_name = 'mobile: powerAC'
+        ext_name = 'mobile: powerAc'
         args = {'state': ac_state}
         self.execute_script(ext_name, args)
         return self
diff --git a/test/unit/webdriver/device/gsm_test.py b/test/unit/webdriver/device/gsm_test.py
index b40f2df5..777946d2 100644
--- a/test/unit/webdriver/device/gsm_test.py
+++ b/test/unit/webdriver/device/gsm_test.py
@@ -67,4 +67,5 @@ def test_set_gsm_voice(self):
         assert isinstance(driver.set_gsm_voice(GsmVoiceState.ROAMING), WebDriver)
 
         d = get_httpretty_request_body(httpretty.last_request())
+        assert d['script'] == 'mobile: gsmVoice'
         assert d['args'][0]['state'] == GsmVoiceState.ROAMING
diff --git a/test/unit/webdriver/device/power_test.py b/test/unit/webdriver/device/power_test.py
index ea5fe1dc..f96fcd5d 100644
--- a/test/unit/webdriver/device/power_test.py
+++ b/test/unit/webdriver/device/power_test.py
@@ -43,5 +43,5 @@ def test_set_power_ac(self):
         assert isinstance(driver.set_power_ac(Power.AC_ON), WebDriver)
 
         d = get_httpretty_request_body(httpretty.last_request())
-        assert d['script'] == 'mobile: powerAC'
+        assert d['script'] == 'mobile: powerAc'
         assert d['args'][0]['state'] == Power.AC_ON