diff --git a/CHANGELOG.md b/CHANGELOG.md
index f64e847..5b2b484 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- fix pth when the current prefix is not the last
+
 ## [v0.5.1] - 2022-05-02
 
 - add metadata
diff --git a/cmeel/consts.py b/cmeel/consts.py
index fc4f27d..120afc4 100644
--- a/cmeel/consts.py
+++ b/cmeel/consts.py
@@ -1,8 +1,7 @@
 import os
 import sys
 
+CMEEL_PREFIX = "cmeel.prefix"
 SITELIB = os.sep.join(
     ["lib", "python" + ".".join(sys.version.split(".")[:2]), "site-packages"]
 )
-CMEEL_PREFIX = "cmeel.prefix"
-CMEEL_PTH = os.sep.join([CMEEL_PREFIX, SITELIB])
diff --git a/cmeel/pth.py b/cmeel/pth.py
index 3abc6ef..42d0bd9 100644
--- a/cmeel/pth.py
+++ b/cmeel/pth.py
@@ -1,6 +1,6 @@
-import os
 import sys
+from pathlib import Path
 
-from . import consts
+from .consts import CMEEL_PREFIX, SITELIB
 
-sys.path.append(os.sep.join([sys.path[-1], consts.CMEEL_PTH]))
+sys.path.append(str(Path(__file__).parent.parent / CMEEL_PREFIX / SITELIB))