diff --git a/devices/prigo_z.properties b/devices/prigo_z.properties
index 0669a24..31c4c23 100644
--- a/devices/prigo_z.properties
+++ b/devices/prigo_z.properties
@@ -1,6 +1,6 @@
-#Fri Nov 20 16:37:06 CET 2015
-maxValue=0.0
-minValue=0.0
+#Mon Nov 23 09:34:54 CET 2015
+maxValue=-5.0
+minValue=5.0
 offset=0.0
 precision=3
 resolution=NaN