diff --git a/nimbus/vm/computation.nim b/nimbus/vm/computation.nim
index f81707008..053bf35e9 100644
--- a/nimbus/vm/computation.nim
+++ b/nimbus/vm/computation.nim
@@ -144,6 +144,7 @@ proc newComputation*(vmState: BaseVMState, message: Message, salt= 0.u256): Comp
   result.msg = message
   result.memory = Memory()
   result.stack = newStack()
+  result.returnStack = newStack()
   result.gasMeter.init(message.gas)
   result.touchedAccounts = initHashSet[EthAddress]()
   result.suicides = initHashSet[EthAddress]()
diff --git a/nimbus/vm_types.nim b/nimbus/vm_types.nim
index 069abe768..7cfccd617 100644
--- a/nimbus/vm_types.nim
+++ b/nimbus/vm_types.nim
@@ -68,6 +68,7 @@ type
     msg*:                   Message
     memory*:                Memory
     stack*:                 Stack
+    returnStack*:           Stack
     gasMeter*:              GasMeter
     code*:                  CodeStream
     output*:                seq[byte]