diff --git a/lib/pure/os.nim b/lib/pure/os.nim
index eb7aaa6a68..1739718f6f 100644
--- a/lib/pure/os.nim
+++ b/lib/pure/os.nim
@@ -1019,7 +1019,7 @@ proc moveFile*(source, dest: string) {.rtl, extern: "nos$1",
       let d = newWideCString(dest)
       if moveFileW(s, d, 0'i32) == 0'i32: raiseOSError(osLastError())
     else:
-      if moveFileA(source, dest, 0'i32) == 0'i32: raiseOSError(osLastError(),$strerror(errno))
+      if moveFileA(source, dest, 0'i32) == 0'i32: raiseOSError(osLastError())
   else:
     if c_rename(source, dest) != 0'i32:
       raiseOSError(osLastError(), $strerror(errno))