diff --git a/homeassistant/components/sfr_box/sensor.py b/homeassistant/components/sfr_box/sensor.py
index 8f50b6acd90..8b495da56c3 100644
--- a/homeassistant/components/sfr_box/sensor.py
+++ b/homeassistant/components/sfr_box/sensor.py
@@ -123,7 +123,7 @@ DSL_SENSOR_TYPES: tuple[SFRBoxSensorEntityDescription[DslInfo], ...] = (
         entity_registry_enabled_default=False,
         options=[
             "no_defect",
-            "of_frame",
+            "loss_of_frame",
             "loss_of_signal",
             "loss_of_power",
             "loss_of_signal_quality",
diff --git a/homeassistant/components/sfr_box/strings.json b/homeassistant/components/sfr_box/strings.json
index 6f0001e97ce..35e9b1869ff 100644
--- a/homeassistant/components/sfr_box/strings.json
+++ b/homeassistant/components/sfr_box/strings.json
@@ -64,11 +64,11 @@
       "dsl_line_status": {
         "name": "DSL line status",
         "state": {
-          "no_defect": "No Defect",
-          "of_frame": "Of Frame",
-          "loss_of_signal": "Loss Of Signal",
-          "loss_of_power": "Loss Of Power",
-          "loss_of_signal_quality": "Loss Of Signal Quality",
+          "no_defect": "No defect",
+          "loss_of_frame": "Loss of frame",
+          "loss_of_signal": "Loss of signal",
+          "loss_of_power": "Loss of power",
+          "loss_of_signal_quality": "Loss of signal quality",
           "unknown": "Unknown"
         }
       },
diff --git a/tests/components/sfr_box/snapshots/test_sensor.ambr b/tests/components/sfr_box/snapshots/test_sensor.ambr
index 6376ef24ce2..56745c8be8e 100644
--- a/tests/components/sfr_box/snapshots/test_sensor.ambr
+++ b/tests/components/sfr_box/snapshots/test_sensor.ambr
@@ -486,7 +486,7 @@
       'capabilities': dict({
         'options': list([
           'no_defect',
-          'of_frame',
+          'loss_of_frame',
           'loss_of_signal',
           'loss_of_power',
           'loss_of_signal_quality',
@@ -755,7 +755,7 @@
         'friendly_name': 'SFR Box DSL line status',
         'options': list([
           'no_defect',
-          'of_frame',
+          'loss_of_frame',
           'loss_of_signal',
           'loss_of_power',
           'loss_of_signal_quality',