diff --git a/Dockerfile b/Dockerfile
index 3b2ada7..9a0b497 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ FROM bitnami/minideb:stretch
 LABEL maintainer="@ManuelLR <manuellr.git@gmail.com>"
 
 ENV GIT_URL https://github.com/lupoDharkael/flameshot.git
-ENV GIT_BRANCH v0.5.0
+ENV GIT_BRANCH v0.5.1
 
 ENV BUILD_PACKAGES git g++ build-essential qt5-qmake qt5-default qttools5-dev-tools
 ENV RUNTIME_PACKAGES libqt5dbus5 libqt5network5 libqt5core5a libqt5widgets5 libqt5gui5 openssl ca-certificates
diff --git a/README.md b/README.md
index 7596bf3..0efb980 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ Dockerized - [Flameshot](https://github.com/lupoDharkael/flameshot)
 Based on https://gist.github.com/slok/acb235ae30129307fd53
 
 ```bash
-KEY=$(xauth list  | grep $(hostname) | awk '{ print $3 }' | head -n 1)
+KEY=$(xauth list | grep $(hostname) | awk '{ print $3 }' | head -n 1)
 DCK_HOST=docker-flameshot
 xauth add $DCK_HOST/unix:0 . $KEY
 
@@ -24,3 +24,12 @@ docker run -it --rm \
 - `--env="QT_X11_NO_MITSHM=1"`
 - `--privileged`: Fix LibGL errors
 
+## Troubleshooting
+### Could not connect to display
+Maybe the container haven't access to the GUI because it run with root permission.
+
+Try this command:
+```bash
+xhost local:root
+```
+