diff --git a/nim.cfg b/nim.cfg
new file mode 100644
index 0000000..1239cab
--- /dev/null
+++ b/nim.cfg
@@ -0,0 +1 @@
+--experimental:ForLoopMacros
diff --git a/stint/private/as_words.nim b/stint/private/as_words.nim
index 50be3e4..2275f36 100644
--- a/stint/private/as_words.nim
+++ b/stint/private/as_words.nim
@@ -12,8 +12,6 @@ import  ./datatypes, ./conversion, macros
 # #########################################################################
 # Multi-precision ints to compile-time array of words
 
-{.experimental: "ForLoopMacros".}
-
 proc asWordsImpl(x: NimNode, current_path: NimNode, result: var NimNode) =
   ## Transforms an UintImpl/IntImpl into an array of words
   ## at compile-time. Recursive implementation.
diff --git a/stint/private/uint_bitwise_ops.nim b/stint/private/uint_bitwise_ops.nim
index 23684ea..c1b2d3c 100644
--- a/stint/private/uint_bitwise_ops.nim
+++ b/stint/private/uint_bitwise_ops.nim
@@ -9,7 +9,6 @@
 
 import  ./datatypes, ./as_words
 
-
 func `not`*(x: UintImpl): UintImpl {.inline.}=
   ## Bitwise complement of unsigned integer x
   for wr, wx in asWords(result, x):