diff --git a/dockerfiles/bionic.docker b/dockerfiles/bionic.docker
index 0a5f9e589b4d01f183cb18537a50d482d5985ba3..ee0387203823d31c0ab49597847013793ca8c96b 100644
--- a/dockerfiles/bionic.docker
+++ b/dockerfiles/bionic.docker
@@ -33,7 +33,7 @@ RUN apt-get update && \
     apt-get install -y vim-common && \
     apt-get install -y netcat-openbsd && \
     useradd -u 30996 msk_jenkins && \
-    ln -sfn /usr/lib/x86_64-linux-gnu/libzmq.so.5 /usr/lib/x86_64-linux-gnu/libzmq.so.3 \
+    ln -sfn /usr/lib/x86_64-linux-gnu/libzmq.so.5 /usr/lib/x86_64-linux-gnu/libzmq.so.3 && \
     pip3 install meson
 
 RUN echo "Defaults set_home" >> /etc/sudoers && \
diff --git a/dockerfiles/xenial.docker b/dockerfiles/xenial.docker
index 682090725521e48f25806dc447a08e393c873674..f097afee3dc164553f770e6e51f2a2734e35e24e 100644
--- a/dockerfiles/xenial.docker
+++ b/dockerfiles/xenial.docker
@@ -34,7 +34,7 @@ RUN apt-get update && \
     apt-get install -y vim-common && \
     apt-get install -y netcat-openbsd && \
     useradd -u 30996 msk_jenkins && \
-    ln -sfn /usr/lib/x86_64-linux-gnu/libzmq.so.5 /usr/lib/x86_64-linux-gnu/libzmq.so.3 \
+    ln -sfn /usr/lib/x86_64-linux-gnu/libzmq.so.5 /usr/lib/x86_64-linux-gnu/libzmq.so.3 && \
     pip3 install meson
 
 RUN echo "Defaults set_home" >> /etc/sudoers && \