diff --git a/devices/prigo_z.properties b/devices/prigo_z.properties
index 8c1a3f9..09d600c 100644
--- a/devices/prigo_z.properties
+++ b/devices/prigo_z.properties
@@ -1,7 +1,7 @@
-#Mon Nov 23 09:39:14 CET 2015
+#Mon Nov 23 09:40:24 CET 2015
 maxValue=2.0
 minValue=-2.0
-offset=0.0
+offset=0.156
 precision=3
 resolution=NaN
 scale=1.0