diff --git a/mantisbt/Dockerfile b/mantisbt/Dockerfile
index fde8dfa..4998c71 100644
--- a/mantisbt/Dockerfile
+++ b/mantisbt/Dockerfile
@@ -1,3 +1,7 @@
+#
+# Dockerfile for mantisbt
+#
+
 FROM php:5.5-apache
 MAINTAINER kev<noreply@datageek.info>
 
@@ -11,11 +15,13 @@ RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev libpq-dev \
 WORKDIR /var/www/html
 
 ENV MANTIS_VERSION 1.2.19
-ENV MANTIS_MD5 ef1523405d1d1c87b3431e47e82b3ab0
+ENV MANTIS_MD5 8377a0219ec344b9ab9c186012b5114f
 ENV MANTIS_URL http://jaist.dl.sourceforge.net/project/mantisbt/mantis-stable/${MANTIS_VERSION}/mantisbt-${MANTIS_VERSION}.tar.gz
+ENV MANTIS_FILE mantisbt.tar.gz
 
-RUN curl -fSL -o mantisbt.tar.gz ${MANTIS_URL} \
-	&& echo "${MANTIS_MD5} mantisbt.tar.gz" | md5sum -c - \
-	&& tar -xz --strip-components=1 -f mantisbt.tar.gz \
-	&& rm mantisbt.tar.gz \
+RUN curl -fSL ${MANTIS_URL} -o ${MANTIS_FILE} \
+	&& echo "${MANTIS_MD5} ${MANTIS_FILE}" | md5sum -c - \
+	&& tar -xz --strip-components=1 -f ${MANTIS_FILE} \
+	&& rm ${MANTIS_FILE} \
 	&& chown -R www-data:www-data .
+