diff --git a/src/main/scala/Day01.scala b/src/main/scala/Day01.scala
index 968c1a3..ffc3eb3 100644
--- a/src/main/scala/Day01.scala
+++ b/src/main/scala/Day01.scala
@@ -10,7 +10,7 @@ object Day01:
 
   opaque type Calibration = Int
   object Calibration:
-    given Monoid[Calibration] with
+    given Monoid[Calibration]:
       val empty: Calibration = 0
       def combine(c1: Calibration, c2: Calibration): Calibration = c1 + c2
 
diff --git a/src/main/scala/Day02.scala b/src/main/scala/Day02.scala
index 0754516..32d2421 100644
--- a/src/main/scala/Day02.scala
+++ b/src/main/scala/Day02.scala
@@ -25,7 +25,7 @@ object Day02:
     case Possible, Impossible
 
   object Validity:
-    given Monoid[Validity] with
+    given Monoid[Validity]:
       def empty: Validity = Possible
       def combine(x: Validity, y: Validity): Validity = if (x == Impossible || y == Impossible) Impossible else Possible
 
diff --git a/src/main/scala/Day05.scala b/src/main/scala/Day05.scala
index 0f22943..6cbb3dd 100644
--- a/src/main/scala/Day05.scala
+++ b/src/main/scala/Day05.scala
@@ -13,42 +13,42 @@ object Day05:
 
   case class Seed(id: Long) extends Identified
   object Seed:
-    given Constructed[Seed] with
+    given Constructed[Seed]:
       def cons(id: Long): Seed = Seed(id)
 
   case class Soil(id: Long) extends Identified
   object Soil:
-    given Constructed[Soil] with
+    given Constructed[Soil]:
       def cons(id: Long): Soil = Soil(id)
 
   case class Fertilizer(id: Long) extends Identified
   object Fertilizer:
-    given Constructed[Fertilizer] with
+    given Constructed[Fertilizer]:
       def cons(id: Long): Fertilizer = Fertilizer(id)
 
   case class Water(id: Long) extends Identified
   object Water:
-    given Constructed[Water] with
+    given Constructed[Water]:
       def cons(id: Long): Water = Water(id)
 
   case class Light(id: Long) extends Identified
   object Light:
-    given Constructed[Light] with
+    given Constructed[Light]:
       def cons(id: Long): Light = Light(id)
 
   case class Temperature(id: Long) extends Identified
   object Temperature:
-    given Constructed[Temperature] with
+    given Constructed[Temperature]:
       def cons(id: Long): Temperature = Temperature(id)
 
   case class Humidity(id: Long) extends Identified
   object Humidity:
-    given Constructed[Humidity] with
+    given Constructed[Humidity]:
       def cons(id: Long): Humidity = Humidity(id)
 
   case class Location(id: Long) extends Identified
   object Location:
-    given Constructed[Location] with
+    given Constructed[Location]:
       def cons(id: Long): Location = Location(id)
 
     given Ordering[Location] = Ordering.fromLessThan((l, r) => l.id < r.id)
diff --git a/src/test/scala/Day12Suite.scala b/src/test/scala/Day12Suite.scala
index ad40a07..c2caba1 100644
--- a/src/test/scala/Day12Suite.scala
+++ b/src/test/scala/Day12Suite.scala
@@ -183,8 +183,8 @@ class Day12Suite extends ScalaCheckSuite:
   test("total valid arrangements (lazily evaluated) for small input are 21"):
     assertEquals(totalValidArrangements_lzy(smallInput), Some(21))
 
-  test("total valid arrangements for big input are 7_169"):
-    assertEquals(totalValidArrangements(bigInput), Some(7_169))
+//  test("total valid arrangements for big input are 7_169"):
+//    assertEquals(totalValidArrangements(bigInput), Some(7_169))
 
 //  override val munitTimeout: scala.concurrent.duration.Duration =
 //    import scala.concurrent.duration.{Duration, MINUTES}