diff --git a/homeassistant/components/opencv/image_processing.py b/homeassistant/components/opencv/image_processing.py
index 6b5e4e85513..028d6eacf24 100644
--- a/homeassistant/components/opencv/image_processing.py
+++ b/homeassistant/components/opencv/image_processing.py
@@ -62,7 +62,7 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
                             CONF_NEIGHBORS, DEFAULT_NEIGHBORS
                         ): cv.positive_int,
                         vol.Optional(CONF_MIN_SIZE, DEFAULT_MIN_SIZE): vol.Schema(
-                            (int, int)
+                            vol.All(vol.ExactSequence([int, int]), vol.Coerce(tuple))
                         ),
                     }
                 ),