diff --git a/Dockerfile b/Dockerfile
index 99b4f25..a6b997a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,5 +15,5 @@ RUN pip install pysph
 RUN wget https://github.com/matplotlib/basemap/archive/v1.2.0rel.tar.gz
 RUN tar -xvzf v1.2.0rel.tar.gz
 RUN rm v1.2.0rel.tar.gz
-RUN cd basemap-1.2.0rel/
+RUN cd basemap-1.2.0rel/ && ls
 RUN ls
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