diff --git a/Scripts/Zeeman_Order/zeeman_exp.py b/Scripts/Zeeman_Order/zeeman_exp.py
index 5850711..9112034 100644
--- a/Scripts/Zeeman_Order/zeeman_exp.py
+++ b/Scripts/Zeeman_Order/zeeman_exp.py
@@ -103,7 +103,7 @@ def zeeman_experiment(pars, run):
 
    # 8-step phase cycle (Schaefer et al. J Magn Res A 115 (1995))
     pars['PH1'] = [0,   0, 180, 180, 90,  90, 270, 270] # 1st (90-degree) pulse
-    pars['PH3'] = [0, 180,   0, 180, 90, 180,  90, 180] # 2nd (90-degree) pulse
+    pars['PH3'] = [0, 180, 180,   0, 90, 270, 270,  90] # 2nd (90-degree) pulse
     pars['PH4'] = [90]  # 3rd (90-degree) pulse
     pars['PH2'] = [90, 270]  # receiver