diff --git a/rust/Dockerfile b/rust/Dockerfile
index 6b414be..e069078 100644
--- a/rust/Dockerfile
+++ b/rust/Dockerfile
@@ -1,6 +1,9 @@
 FROM debian:wheezy
 MAINTAINER Johannes Schickling "schickling.j@gmail.com"
 
+# needed by cargo
+ENV USER root
+
 ADD install.sh install.sh
 RUN chmod +x install.sh && ./install.sh && rm install.sh