diff --git a/src/errors.nim b/src/errors.nim
index 4d0e4313e..b14fb82ce 100644
--- a/src/errors.nim
+++ b/src/errors.nim
@@ -67,27 +67,12 @@ type
   NotImplementedError* = object of VMError
     ## Not implemented error
 
-#proc makeVMError*: ref VMError =
-#  var e: ref VMError
-#  new(e)
-#  e.burnsGas = true
-#  e.erasesReturnData = true
-#var a: ref VMError
-#new(a)
+proc makeVMError*: ref VMError =
+  new(result)
+  result.burnsGas = true
+  result.erasesReturnData = true
 
-# proc makeRevert*(): Revert =
-#   result.burnsGas = false
-#   result.erasesReturnData = false
-
-#var e = VMError()
-#raise makeVMError()
-#var e: ref VMError
-#new(e)
-#echo e[]
-#proc x* =   
-#  raise newException(VMError, "")
-#var e = makeVMError()
-#echo e[]
-
-
-#x()
\ No newline at end of file
+proc makeRevert*(): ref Revert =
+  new(result)
+  result.burnsGas = false
+  result.erasesReturnData = false