diff --git a/src/main/scala/ee/hrzn/chryse/platform/Platform.scala b/src/main/scala/ee/hrzn/chryse/platform/Platform.scala
index 3f35be6..a60cf5d 100644
--- a/src/main/scala/ee/hrzn/chryse/platform/Platform.scala
+++ b/src/main/scala/ee/hrzn/chryse/platform/Platform.scala
@@ -20,5 +20,5 @@ package ee.hrzn.chryse.platform
 
 trait Platform {
   val id: String
-  val clockHz: Int
+  val clockHz: BigInt
 }
diff --git a/src/main/scala/ee/hrzn/chryse/platform/resource/ClockSource.scala b/src/main/scala/ee/hrzn/chryse/platform/resource/ClockSource.scala
index 3ae1a2a..8f664d5 100644
--- a/src/main/scala/ee/hrzn/chryse/platform/resource/ClockSource.scala
+++ b/src/main/scala/ee/hrzn/chryse/platform/resource/ClockSource.scala
@@ -20,8 +20,8 @@ package ee.hrzn.chryse.platform.resource
 
 import chisel3._
 
-case class ClockSource(hz: Int) extends ResourceData(Input(Clock())) {}
+case class ClockSource(hz: BigInt) extends ResourceData(Input(Clock())) {}
 
 object ClockSource {
-  def apply(hz: Int) = new ClockSource(hz)
+  def apply(hz: BigInt) = new ClockSource(hz)
 }