diff --git a/go.mod b/go.mod
index ed734a8..bc79ef6 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,9 @@ go 1.13
 
 require (
 	github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/gvalkov/golang-evdev v0.0.0-20160925111049-87c03aa1a370
 	github.com/hypebeast/go-osc v0.0.0-20200115085105-85fee7fed692
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/stretchr/testify v1.1.5-0.20161217200445-2402e8e7a02f
 )
diff --git a/go.sum b/go.sum
index fb17637..7b88aba 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,12 @@
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802 h1:1BDTz0u9nC3//pOCMdNH+CiXJVYJh5UQNCOBG7jbELc=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gvalkov/golang-evdev v0.0.0-20160925111049-87c03aa1a370 h1:jsJ5OH/7qrOnuYEdE5WtvJTGk3ssEefhL4Z970XkcfU=
 github.com/gvalkov/golang-evdev v0.0.0-20160925111049-87c03aa1a370/go.mod h1:SAzVFKCRezozJTGavF3GX8MBUruETCqzivVLYiywouA=
 github.com/hypebeast/go-osc v0.0.0-20200115085105-85fee7fed692 h1:a5rmrg0wd6LLuRQGk9lopHHgzyjM8DjH0Ek0iHki5Lc=
 github.com/hypebeast/go-osc v0.0.0-20200115085105-85fee7fed692/go.mod h1:VCiuhv+/+jPFqHeZAgVC61Cr4drPso5XEEKmEiqCsuU=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.1.5-0.20161217200445-2402e8e7a02f h1:xvdAWoe6QxPIuElLfcPOsI/M/Shgaq0LGavn/8vcXro=
 github.com/stretchr/testify v1.1.5-0.20161217200445-2402e8e7a02f/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
diff --git a/watch.go b/watch.go
index cdde33c..deade87 100644
--- a/watch.go
+++ b/watch.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"log"
 	"time"
 
 	"github.com/BurntSushi/xgb"
@@ -72,14 +71,16 @@ func (w *watcher) watch() {
 	reply, err := xproto.GetProperty(w.conn, false, w.root, w.activeAtom,
 		xproto.GetPropertyTypeAny, 0, (1<<32)-1).Reply()
 	if err != nil {
-		log.Fatal(err)
+		fmt.Println("watch windows, failed to get window properties:", err)
+		return
 	}
 	windowID := xproto.Window(xgb.Get32(reply.Value))
 
 	reply, err = xproto.GetProperty(w.conn, false, windowID, w.nameAtom,
 		xproto.GetPropertyTypeAny, 0, (1<<32)-1).Reply()
 	if err != nil {
-		log.Fatal(err)
+		fmt.Println("watch windows, re-failed to get window properties:", err)
+		return
 	}
 
 	w.lastWindowID = windowID