diff --git a/server/tilerendererjob/incremental.go b/server/tilerendererjob/incremental.go
index 95a3c75..2c4323f 100644
--- a/server/tilerendererjob/incremental.go
+++ b/server/tilerendererjob/incremental.go
@@ -49,14 +49,11 @@ func incrementalRender(ctx *app.App) {
 
 		ctx.WebEventbus.Emit("incremental-render-progress", &ev)
 
-		millisDiff := time.Now().Unix() - result.LastMtime
-
 		fields := logrus.Fields{
-			"mapblocks":   len(result.List),
-			"tiles":       tiles,
-			"elapsed":     elapsed,
-			"lastMtime":   result.LastMtime,
-			"secondsDiff": millisDiff / 1000,
+			"mapblocks": len(result.List),
+			"tiles":     tiles,
+			"elapsed":   elapsed,
+			"lastMtime": result.LastMtime,
 		}
 		logrus.WithFields(fields).Info("incremental rendering")
 
diff --git a/server/tilerendererjob/job.go b/server/tilerendererjob/job.go
index 0532708..6c734cf 100644
--- a/server/tilerendererjob/job.go
+++ b/server/tilerendererjob/job.go
@@ -3,14 +3,19 @@ package tilerendererjob
 import (
 	"mapserver/app"
 	"mapserver/settings"
-	"time"
 )
 
 func Job(ctx *app.App) {
 	lastMtime := ctx.Settings.GetInt64(settings.SETTING_LAST_MTIME, 0)
 	if lastMtime == 0 {
-		//mark current time as last incremental render point
-		ctx.Settings.SetInt64(settings.SETTING_LAST_MTIME, time.Now().Unix())
+		//mark db time as last incremental render point
+		lastMtime, err := ctx.Blockdb.GetTimestamp()
+
+		if err != nil {
+			panic(err)
+		}
+
+		ctx.Settings.SetInt64(settings.SETTING_LAST_MTIME, lastMtime)
 	}
 
 	if ctx.Config.EnableInitialRendering {