diff --git a/bearssl/cacert.nim b/bearssl/cacert.nim
index 01d1e5c..432aa33 100644
--- a/bearssl/cacert.nim
+++ b/bearssl/cacert.nim
@@ -1,5 +1,5 @@
 ## Nim-BearSSL
-## Copyright (c) 2018 Status Research & Development GmbH
+## Copyright (c) 2018-2021 Status Research & Development GmbH
 ## Licensed under either of
 ##  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
 ##  * MIT license ([LICENSE-MIT](LICENSE-MIT))
@@ -13,11 +13,11 @@
 ## And converted to C header using ``brssl ta cacert-2020-06-24.pem > cacert``.
 from decls import X509TrustAnchor
 from strutils import rsplit
-from os import DirSep
+from os import DirSep, AltSep
 
-const CurrentPath = currentSourcePath.rsplit(DirSep, 1)[0]
+const CurrentPath = currentSourcePath.rsplit({DirSep, AltSep}, 1)[0]
 
-{.passC: "-I" & CurrentPath & DirSep & "certs".}
+{.passC: "-I" & CurrentPath & "/certs".}
 
 var MozillaTrustAnchors* {.
     importc: "TAs", header: "cacert20200624.h".}: array[138, X509TrustAnchor]
diff --git a/bearssl/decls.nim b/bearssl/decls.nim
index 0faf543..31d805b 100644
--- a/bearssl/decls.nim
+++ b/bearssl/decls.nim
@@ -8,28 +8,28 @@
 ## those terms.
 ## This module implements interface with BearSSL library sources.
 import strutils
-from os import DirSep, quoteShell
+from os import quoteShell, DirSep, AltSep
 
 const
-  bearPath = currentSourcePath.rsplit(DirSep, 1)[0] & DirSep &
-             "csources" & DirSep
+  bearPath = currentSourcePath.rsplit({DirSep, AltSep}, 1)[0] & "/" &
+             "csources" & "/"
 
   bearSrcPath = bearPath & "src"
   bearIncPath = bearPath & "inc"
-  bearIntPath = bearSrcPath & DirSep & "int" & DirSep
-  bearCodecPath = bearSrcPath & DirSep & "codec" & DirSep
-  bearRandPath = bearSrcPath & DirSep & "rand" & DirSep
-  bearRsaPath = bearSrcPath & DirSep & "rsa" & DirSep
-  bearEcPath = bearSrcPath & DirSep & "ec" & DirSep
-  bearX509Path = bearSrcPath & DirSep & "x509" & DirSep
-  bearSslPath = bearSrcPath & DirSep & "ssl" & DirSep
-  bearMacPath = bearSrcPath & DirSep & "mac" & DirSep
-  bearKdfPath = bearSrcPath & DirSep & "kdf" & DirSep
-  bearHashPath = bearSrcPath & DirSep & "hash" & DirSep
-  bearSymcPath = bearSrcPath & DirSep & "symcipher" & DirSep
-  bearAeadPath = bearSrcPath & DirSep & "aead" & DirSep
-  bearToolsPath = bearPath & "tools" & DirSep
-  bearRootPath = bearSrcPath & DirSep
+  bearIntPath = bearSrcPath & "/" & "int" & "/"
+  bearCodecPath = bearSrcPath & "/" & "codec" & "/"
+  bearRandPath = bearSrcPath & "/" & "rand" & "/"
+  bearRsaPath = bearSrcPath & "/" & "rsa" & "/"
+  bearEcPath = bearSrcPath & "/" & "ec" & "/"
+  bearX509Path = bearSrcPath & "/" & "x509" & "/"
+  bearSslPath = bearSrcPath & "/" & "ssl" & "/"
+  bearMacPath = bearSrcPath & "/" & "mac" & "/"
+  bearKdfPath = bearSrcPath & "/" & "kdf" & "/"
+  bearHashPath = bearSrcPath & "/" & "hash" & "/"
+  bearSymcPath = bearSrcPath & "/" & "symcipher" & "/"
+  bearAeadPath = bearSrcPath & "/" & "aead" & "/"
+  bearToolsPath = bearPath & "tools" & "/"
+  bearRootPath = bearSrcPath & "/"
 
 {.passC: "-I" & quoteShell(bearSrcPath)}
 {.passC: "-I" & quoteShell(bearIncPath)}