diff --git a/src/logic/block_ops.nim b/src/logic/block_ops.nim
index 97d5ab376..a4caf0721 100644
--- a/src/logic/block_ops.nim
+++ b/src/logic/block_ops.nim
@@ -1,5 +1,5 @@
 import
-  ../constants, ../errors, ../computation, ../vm_state, ../types, .. / vm / [stack]
+  ../constants, ../errors, ../computation, ../vm_state, ../types, .. / vm / [stack], ttmath
 
 {.this: computation.}
 {.experimental.}
@@ -19,7 +19,6 @@ proc timestamp*(computation) =
   # TODO: EthTime is an alias of Time, which is a distinct int64 so can't use u256(int64)
   # This may have implications for different platforms.
   stack.push(vmState.timestamp.uint64.u256) 
-  stack.push(vmState.timestamp.u256)
 
 proc number*(computation) =
   stack.push(vmState.blockNumber)