diff --git a/bin/install.sh b/bin/install.sh
index 51a8547..c34f1b3 100755
--- a/bin/install.sh
+++ b/bin/install.sh
@@ -3,5 +3,7 @@ git clone git@github.internet2.edu:docker/util.git
 find util/bin -name "*.sh" -exec sh -c 'echo "$1" | sed "s/util\///" >> .gitignore' -- {} \;
 mv util/bin bin
 mv util/README.md BINSCRIPTS.md
-mv util/common.bash.sample common.bash
+if [ ! -f common.bash ]; then
+  mv util/common.bash.sample common.bash
+fi
 rm -rf util
\ No newline at end of file