diff --git a/Dockerfile b/Dockerfile
index f8417f9..e1d96ad 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,7 +17,7 @@ VOLUME ["/teamspeak3"]
 
 # Download TS3 file and extract it into /opt.
 ADD ${TEAMSPEAK_URL} /opt/
-RUN cd /opt && tar -xzf /opt/teamspeak3-server_linux-amd64-3*.tar.gz
+RUN tar -C /opt -xzf /opt/teamspeak3-server_linux-amd64-3*.tar.gz
 
 ADD /scripts/ /opt/scripts/
 RUN chmod -R 774 /opt/scripts/