diff --git a/esphome/components/ntc/sensor.py b/esphome/components/ntc/sensor.py
index db7d7f9b99..a528183ac8 100644
--- a/esphome/components/ntc/sensor.py
+++ b/esphome/components/ntc/sensor.py
@@ -24,7 +24,7 @@ def validate_calibration_parameter(value):
         return cv.Schema({
             cv.Required(CONF_TEMPERATURE): cv.float_,
             cv.Required(CONF_VALUE): cv.float_,
-        })
+        })(value)
 
     value = cv.string(value)
     parts = value.split('->')
diff --git a/tests/test3.yaml b/tests/test3.yaml
index fb46043f34..d35df89ee2 100644
--- a/tests/test3.yaml
+++ b/tests/test3.yaml
@@ -129,6 +129,13 @@ sensor:
       b_constant: 3950
       reference_resistance: 10k
       reference_temperature: 25°C
+  - platform: ntc
+    sensor: resist
+    name: NTC Sensor2
+    calibration:
+      - 10.0kOhm -> 25°C
+      - 27.219kOhm -> 0°C
+      - 14.674kOhm -> 15°C
   - platform: tcs34725
     red_channel:
       name: Red Channel