1 files changed, 4 insertions, 4 deletions
diff --git a/lib/pure/encodings.nim b/lib/pure/encodings.nim
index 26b6e1f22..bbadca655 100644
--- a/lib/pure/encodings.nim
+++ b/lib/pure/encodings.nim
@@ -39,7 +39,7 @@ runnableExamples:
     assert fromGB2312.convert(second) == "有白头如新，倾盖如故"
 
 
-import os
+import std/os
 when defined(nimPreviewSlimSystem):
   import std/assertions
 
@@ -59,7 +59,7 @@ type
                                         ## for encoding errors.
 
 when defined(windows):
-  import parseutils, strutils
+  import std/[parseutils, strutils]
   proc eqEncodingNames(a, b: string): bool =
     var i = 0
     var j = 0
@@ -339,10 +339,10 @@ proc getCurrentEncoding*(uiApp = false): string =
 
 proc open*(destEncoding = "UTF-8", srcEncoding = "CP1252"): EncodingConverter =
   ## Opens a converter that can convert from `srcEncoding` to `destEncoding`.
-  ## Raises `IOError` if it cannot fulfill the request.
+  ## Raises `EncodingError` if it cannot fulfill the request.
   when not defined(windows):
     result = iconvOpen(destEncoding, srcEncoding)
-    if result == nil:
+    if result == cast[EncodingConverter](-1):
       raise newException(EncodingError,
         "cannot create encoding converter from " &
         srcEncoding & " to " & destEncoding)