diff --git a/docker/Dockerfile b/docker/Dockerfile
index ade0545..f8ffbcb 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -16,7 +16,7 @@ RUN cd cbc-ubuntu-64bit && bash install.sh
 
 RUN echo 'PATH=/usr/local/cbc/bin:$PATH' >> $HOME/.bashrc
 
-RUN echo alias cbc='cbc -Wa,--32 -Wl,-melf_i386' >> $HOME/.bashrc
+RUN echo 'alias cbc="cbc -Wa,--32 -Wl,-melf_i386"' >> $HOME/.bashrc
 
 # commands when creating a new container