diff --git a/esphome/components/kt0803/__init__.py b/esphome/components/kt0803/__init__.py
index 7f28bb2ca4..4320daf531 100644
--- a/esphome/components/kt0803/__init__.py
+++ b/esphome/components/kt0803/__init__.py
@@ -301,7 +301,7 @@ AUDIO_LIMITER_LEVEL = {
 REF_CLK_SCHEMA = cv.Schema(
     {
         cv.Optional(CONF_ENABLE, default=False): cv.boolean,
-        cv.Optional(CONF_REF_CLK, default="32.768kHz"): cv.enum(REFERENCE_CLOCK),
+        cv.Optional(CONF_SEL, default="32.768kHz"): cv.enum(REFERENCE_CLOCK),
     }
 )
 
diff --git a/esphome/components/kt0803/select/__init__.py b/esphome/components/kt0803/select/__init__.py
index b77af22baa..5c751f839f 100644
--- a/esphome/components/kt0803/select/__init__.py
+++ b/esphome/components/kt0803/select/__init__.py
@@ -72,7 +72,7 @@ SilenceLowCounterSelect = kt0803_ns.class_("SilenceLowCounterSelect", select.Sel
 
 REF_CLK_SCHEMA = cv.Schema(
     {
-        cv.Optional(CONF_REF_CLK): select.select_schema(
+        cv.Optional(CONF_SEL): select.select_schema(
             RefClkSelect,
             entity_category=ENTITY_CATEGORY_CONFIG,
             icon=ICON_SINE_WAVE,