diff --git a/Dockerfile b/Dockerfile
index e321a777cff41ae457b11d7d847898886683c22d..fedacf7e524a0076e2e41deaee7d3ac3d5cd18eb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -150,6 +150,9 @@ RUN sed -i 's/Nextcloud administrator/administrator/' ${BASE_DIR}/custom_apps/in
 # Remove changeAvatar in changeUserHook of ldap_write_support as it throws errors
 RUN sed -i 's/$this->changeAvatar/\/\/ $this->changeAvatar/' ${BASE_DIR}/custom_apps/ldap_write_support/lib/LDAPUserManager.php
 
+#replace error class in schedule response error file to fix error color
+RUN sed -i 's/update/error/g' ${BASE_DIR}/apps/dav/templates/schedule-response-error.php
+
 # Custom theme
 RUN curl -fsSL -o eCloud-theme.tar.gz \
     "https://gitlab.e.foundation/e/infra/ecloud/nextcloud-apps/nextcloud-theme/-/archive/${THEME_VERSION}/nextcloud-theme-${THEME_VERSION}.tar.gz" && \