diff --git a/Dockerfile.jetty b/Dockerfile.jetty
index 1a06a5b..ea5a034 100644
--- a/Dockerfile.jetty
+++ b/Dockerfile.jetty
@@ -21,5 +21,5 @@ USER jetty
 
 ENV GRAPHVIZ_DOT=/usr/bin/dot
 
-ARG BASE_URL=plantuml
+ARG BASE_URL=ROOT
 COPY --from=builder /app/target/plantuml.war /var/lib/jetty/webapps/$BASE_URL.war
diff --git a/Dockerfile.tomcat b/Dockerfile.tomcat
index 9024999..b4ffce9 100644
--- a/Dockerfile.tomcat
+++ b/Dockerfile.tomcat
@@ -17,6 +17,6 @@ RUN apt-get update && \
 
 ENV GRAPHVIZ_DOT=/usr/bin/dot
 
-ARG BASE_URL=plantuml
+ARG BASE_URL=ROOT
 RUN rm -rf /usr/local/tomcat/webapps/$BASE_URL
 COPY --from=builder /app/target/plantuml.war /usr/local/tomcat/webapps/$BASE_URL.war