diff --git a/Dockerfile b/Dockerfile
index 8971c35..b0d2a6f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,7 +18,7 @@ RUN \
 
 # fix path to cropper.js
 RUN \
- sed 's#src="/cropper/#/src="cropper/#' /etc/smokeping/basepage.html
+ sed -i 's#src="/cropper/#/src="cropper/#' /etc/smokeping/basepage.html
 
 # add local files
 COPY root/ /
diff --git a/README.md b/README.md
index 725e2d4..2c3232f 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ Wait 10 minutes.
 
 **Version**
 
++ **12.04.17:** Fix cropper.js path, thanks nibbledeez.
 + **09.02.17:** Rebase to alpine 3.5.
 + **17.10.16:** Add ttf-dejavu package as per [LT forum](http://lime-technology.com/forum/index.php?topic=43602.msg507875#msg507875).
 + **10.09.16:** Add layer badges to README.