diff --git a/Dockerfile b/Dockerfile
index 073c706..6cf33f1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,9 +20,9 @@ RUN zypper -n in tar wget curl gzip && \
     groupadd -g $STEP_GID $STEP_GROUP && \
     useradd -u $STEP_UID -g $STEP_GROUP -M $STEP_USER
 
-RUN wget https://github.com/smallstep/certificates/releases/download/v\$STEP_VERSION/step-certificates_linux_\$STEP_VERSION_amd64.tar.gz && \
+RUN wget https://github.com/smallstep/certificates/releases/download/v\$STEP_VERSION/step-certificates_linux_$STEP_VERSION\_amd64.tar.gz && \
     tar -zxvf step-certificates_linux_$STEP_VERSION\_amd64.tar.gz -C /tmp/ && \
-    mv /tmp/step-certificates_\$STEP_VERSION/bin/step /usr/local/bin/ && \
+    mv /tmp/step-certificates_$STEP_VERSION/bin/step /usr/local/bin/ && \
     mkdir /home/step
 
 RUN wget https://github.com/smallstep/cli/releases/download/v$STEP_VERSION/step_linux_$STEP_VERSION\_amd64.tar.gz && \
@@ -30,7 +30,7 @@ RUN wget https://github.com/smallstep/cli/releases/download/v$STEP_VERSION/step_
     mv /tmp/step_\$STEP_VERSION/bin/step /usr/local/bin/ && \
     mkdir /home/step
 
-RUN rm -rf step_linux_$STEP_VERSION\_amd64.tar.gz /tmp/step_$STEP_VERSION
+RUN rm -rf step_linux_$STEP_VERSION\_amd64.tar.gz /tmp/step_$STEP_VERSION /tmp/step-certificates_$STEP_VERSION
 
 EXPOSE 9000/tcp