diff --git a/homeassistant/components/motionmount/config_flow.py b/homeassistant/components/motionmount/config_flow.py
index c7cb76779de711..4e007b909d30bd 100644
--- a/homeassistant/components/motionmount/config_flow.py
+++ b/homeassistant/components/motionmount/config_flow.py
@@ -107,9 +107,21 @@ async def async_step_zeroconf(
             # so we can avoid probing the device if its already
             # configured or ignored
             await self.async_set_unique_id(unique_id)
-            self._abort_if_unique_id_configured(
-                updates={CONF_HOST: host, CONF_PORT: port}
+            existing_entry = self._async_current_entries()
+            existing_host = next(
+                (
+                    e.data.get(CONF_HOST, "")
+                    for e in existing_entry
+                    if e.unique_id == unique_id
+                ),
+                "",
             )
+            if not existing_host or existing_host.endswith(".local"):
+                host_updates = {CONF_HOST: host, CONF_PORT: port}
+            else:
+                host_updates = {CONF_PORT: port}
+                self.connection_data[CONF_HOST] = existing_host
+            self._abort_if_unique_id_configured(updates=host_updates)
         else:
             # Avoid probing devices that already have an entry
             self._async_abort_entries_match({CONF_HOST: host})
@@ -131,9 +143,21 @@ async def async_step_zeroconf(
 
         if unique_id:
             await self.async_set_unique_id(unique_id)
-            self._abort_if_unique_id_configured(
-                updates={CONF_HOST: host, CONF_PORT: port}
+            existing_entry = self._async_current_entries()
+            existing_host = next(
+                (
+                    e.data.get(CONF_HOST, "")
+                    for e in existing_entry
+                    if e.unique_id == unique_id
+                ),
+                "",
+            )
+            host_updates = (
+                {CONF_HOST: host, CONF_PORT: port}
+                if not existing_host or existing_host.endswith(".local")
+                else {CONF_PORT: port}
             )
+            self._abort_if_unique_id_configured(updates=host_updates)
         else:
             await self._async_handle_discovery_without_unique_id()
 
diff --git a/tests/components/motionmount/test_config_flow.py b/tests/components/motionmount/test_config_flow.py
index f6c5e8d8cc3161..96536b22d6002a 100644
--- a/tests/components/motionmount/test_config_flow.py
+++ b/tests/components/motionmount/test_config_flow.py
@@ -389,6 +389,34 @@ async def test_zeroconf_device_exists_abort(
     assert result["reason"] == "already_configured"
 
 
+async def test_zeroconf_does_not_overwrite_static_ip(
+    hass: HomeAssistant,
+    mock_motionmount: MagicMock,
+) -> None:
+    """Test zeroconf discovery does not overwrite a manually configured static IP."""
+    mock_config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        unique_id=ZEROCONF_MAC,
+        data={
+            CONF_HOST: HOST,
+            CONF_PORT: PORT,
+        },
+    )
+    mock_config_entry.add_to_hass(hass)
+
+    discovery_info = dataclasses.replace(MOCK_ZEROCONF_TVM_SERVICE_INFO_V2)
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_ZEROCONF},
+        data=discovery_info,
+    )
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "already_configured"
+    assert mock_config_entry.data[CONF_HOST] == HOST
+    assert mock_config_entry.data[CONF_HOST] != ZEROCONF_HOSTNAME
+
+
 async def test_zeroconf_authentication_needed(
     hass: HomeAssistant,
     mock_config_entry: MockConfigEntry,