diff --git a/wexpect/host.py b/wexpect/host.py
index d8eea83..e6a79e3 100644
--- a/wexpect/host.py
+++ b/wexpect/host.py
@@ -357,7 +357,7 @@ class SpawnBase:
                 wexpect_executable = os.environ['WEXPECT_EXECUTABLE']
             except KeyError:
                 dirname = os.path.dirname(sys.executable)
-                wexpect_executable = os.path.join(dirname, '..', 'wexpect', 'wexpect.exe')
+                wexpect_executable = os.path.abspath(os.path.join(dirname, '..', 'wexpect', 'wexpect.exe'))
 
             if not os.path.exists(wexpect_executable):
                 logger.error(f'ExceptionPexpect: Wexpect executable: >>{wexpect_executable}<< not found.')