diff --git a/devices/ps1img.properties b/devices/ps1img.properties
index baeaabe6..03f275a3 100644
--- a/devices/ps1img.properties
+++ b/devices/ps1img.properties
@@ -1,7 +1,7 @@
-#Tue Aug 30 14:04:35 CEST 2016
+#Tue Aug 30 14:09:40 CEST 2016
 colormap=Grayscale
 colormapAutomatic=true
-colormapMax=255.0
+colormapMax=4169.819
 colormapMin=0.0
 dataMonitoring=false
 dataPolling=500