diff --git a/homeassistant/components/fully_kiosk/services.py b/homeassistant/components/fully_kiosk/services.py
index c1e0d89f7a1..b9369198940 100644
--- a/homeassistant/components/fully_kiosk/services.py
+++ b/homeassistant/components/fully_kiosk/services.py
@@ -69,18 +69,21 @@ async def async_setup_services(hass: HomeAssistant) -> None:
     async def async_set_config(call: ServiceCall) -> None:
         """Set a Fully Kiosk Browser config value on the device."""
         for coordinator in await collect_coordinators(call.data[ATTR_DEVICE_ID]):
+            key = call.data[ATTR_KEY]
+            value = call.data[ATTR_VALUE]
+
             # Fully API has different methods for setting string and bool values.
             # check if call.data[ATTR_VALUE] is a bool
-            if isinstance(call.data[ATTR_VALUE], bool) or call.data[
-                ATTR_VALUE
-            ].lower() in ("true", "false"):
-                await coordinator.fully.setConfigurationBool(
-                    call.data[ATTR_KEY], call.data[ATTR_VALUE]
-                )
+            if isinstance(value, bool) or (
+                isinstance(value, str) and value.lower() in ("true", "false")
+            ):
+                await coordinator.fully.setConfigurationBool(key, value)
             else:
-                await coordinator.fully.setConfigurationString(
-                    call.data[ATTR_KEY], call.data[ATTR_VALUE]
-                )
+                # Convert any int values to string
+                if isinstance(value, int):
+                    value = str(value)
+
+                await coordinator.fully.setConfigurationString(key, value)
 
     # Register all the above services
     service_mapping = [
@@ -111,7 +114,7 @@ async def async_setup_services(hass: HomeAssistant) -> None:
                 {
                     vol.Required(ATTR_DEVICE_ID): cv.ensure_list,
                     vol.Required(ATTR_KEY): cv.string,
-                    vol.Required(ATTR_VALUE): vol.Any(str, bool),
+                    vol.Required(ATTR_VALUE): vol.Any(str, bool, int),
                 }
             )
         ),
diff --git a/tests/components/fully_kiosk/test_services.py b/tests/components/fully_kiosk/test_services.py
index 25c432166fa..6bce012aad3 100644
--- a/tests/components/fully_kiosk/test_services.py
+++ b/tests/components/fully_kiosk/test_services.py
@@ -71,6 +71,22 @@ async def test_services(
 
     mock_fully_kiosk.setConfigurationString.assert_called_once_with(key, value)
 
+    key = "test_key"
+    value = 1234
+
+    await hass.services.async_call(
+        DOMAIN,
+        SERVICE_SET_CONFIG,
+        {
+            ATTR_DEVICE_ID: [device_entry.id],
+            ATTR_KEY: key,
+            ATTR_VALUE: value,
+        },
+        blocking=True,
+    )
+
+    mock_fully_kiosk.setConfigurationString.assert_called_with(key, str(value))
+
     key = "test_key"
     value = "true"
     await hass.services.async_call(