diff --git a/.github/workflows/ci.py b/.github/workflows/ci.py
index ef3811c0e..67aa5820d 100644
--- a/.github/workflows/ci.py
+++ b/.github/workflows/ci.py
@@ -106,7 +106,7 @@ def main():
     if is_bundle:
         setup_bundle_env()
     else:
-        if not is_macos:
+        if not is_macos and 'pythonLocation' in os.environ:
             os.environ['LD_LIBRARY_PATH'] = '{}/lib'.format(os.environ['pythonLocation'])
     action = sys.argv[-1]
     if action in ('build', 'package'):