diff --git a/Dockerfile b/Dockerfile
index b55a783..d774c46 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -43,7 +43,7 @@ USER ${APP}
 
 # Copy the project into the workdir
 WORKDIR ${APP_BASE}/${APP}
-COPY --chown ${APP}:${APP} . ${APP_BASE}/${APP}
+COPY --chown=${APP}:${APP} . ${APP_BASE}/${APP}
 
 # Install Python requirements
 RUN pip3 install -r requirements.txt