diff --git a/epyt/__init__.py b/epyt/__init__.py
index 990172d..60ff64f 100644
--- a/epyt/__init__.py
+++ b/epyt/__init__.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 __author__ = """Marios S. Kyriakou"""
 __email__ = "kiriakou.marios@ucy.ac.cy"
-__version__ = "1.1.0"
+__version__ = "1.1.1"
 __msxversion__ = "2.0.0"
 __copyright__ = """Copyright 2022, KIOS Research and Innovation Center of Excellence (KIOS CoE), 
 University of Cyprus (www.kios.org.cy)."""
diff --git a/epyt/epanet.py b/epyt/epanet.py
index 10c90c6..5e964fd 100644
--- a/epyt/epanet.py
+++ b/epyt/epanet.py
@@ -16202,8 +16202,12 @@ def MSXstep(self):
                t : current simulation time at the end of the step(in secconds)
                tleft: time left in the simulation (in secconds)
            """
-        t = c_long()
-        tleft = c_long()
+        if platform.system().lower() in ["windows"]:
+            t = c_double()
+            tleft = c_double()
+        else:
+            t = c_double()
+            tleft = c_long()
         err = self.msx_lib.MSXstep(byref(t), byref(tleft))
 
         if err: