diff --git a/Dockerfile b/Dockerfile
index e447983..b6b3f3b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -52,8 +52,8 @@ RUN rm -rf ${CATALINA_HOME}/webapps/ROOT \
   && rm -rf guacamole-auth-jdbc-${GUAC_VER} guacamole-auth-jdbc-${GUAC_VER}.tar.gz
 
 # Add optional extensions
-  RUN mkdir ${GUACAMOLE_HOME}/extensions-available \
-    && for i in auth-ldap auth-duo auth-header auth-noauth auth-cas; do \
+RUN mkdir ${GUACAMOLE_HOME}/extensions-available \
+  && for i in auth-ldap auth-duo auth-header auth-noauth auth-cas; do \
     echo "https://sourceforge.net/projects/guacamole/files/current/extensions/guacamole-${i}-${GUAC_VER}.tar.gz" \
     && curl -SLO "https://sourceforge.net/projects/guacamole/files/current/extensions/guacamole-${i}-${GUAC_VER}.tar.gz" \
     && tar -xzf guacamole-${i}-${GUAC_VER}.tar.gz \