diff --git a/script/users/TUM/TUM_multi_XPS_201908.py b/script/users/TUM/TUM_multi_XPS_201908.py
index eeea22e1..2d35fa2f 100644
--- a/script/users/TUM/TUM_multi_XPS_201908.py
+++ b/script/users/TUM/TUM_multi_XPS_201908.py
@@ -215,7 +215,7 @@ try:
     # theta (polar), phi (azimuth), x, y, z
     #sample_pos = [[-9.1,-90.0,-3.45, -0.5, 115.1]]
     #sample_pos = [[-9.1,-90.0, -2.6, 0.5, 115.1]]
-    sample_pos = [[-9.1,-90.0, 0.45, 0.5, 115.1]]
+    sample_pos = [[-9.1,-90.0, 0.45, -0.5, 115.1]]
 
     for (index, nn) in enumerate(sample_pos):
         polar = nn[0]