diff --git a/esphome/config_validation.py b/esphome/config_validation.py
index 0fdce85dc3..b77e22a6fb 100644
--- a/esphome/config_validation.py
+++ b/esphome/config_validation.py
@@ -1494,9 +1494,7 @@ def ipv6address(value):
 def ipv4address_multi_broadcast(value):
     address = ipv4address(value)
     if not (address.is_multicast or (address == IPv4Address("255.255.255.255"))):
-        raise Invalid(
-            f"{value} is not a multicasst address nor local broadcast address"
-        )
+        raise Invalid(f"{value} is not a multicast address nor local broadcast address")
     return address
 
 
diff --git a/tests/unit_tests/test_config_validation.py b/tests/unit_tests/test_config_validation.py
index 2715f9c644..ea3a4ecb53 100644
--- a/tests/unit_tests/test_config_validation.py
+++ b/tests/unit_tests/test_config_validation.py
@@ -1926,7 +1926,7 @@ def test_ipv4address_multi_broadcast_broadcast() -> None:
 
 
 def test_ipv4address_multi_broadcast_invalid() -> None:
-    with pytest.raises(Invalid, match="not a multicasst"):
+    with pytest.raises(Invalid, match="not a multicast"):
         cv.ipv4address_multi_broadcast("192.168.0.1")