diff --git a/lib/utils.sh b/lib/utils.sh
index 6c6454d1921228fca7b7f5defcc01e882f0b272f..bf1b2dd517156b06a22bdb79a81a2a8109729bb4 100644
--- a/lib/utils.sh
+++ b/lib/utils.sh
@@ -11,13 +11,13 @@ ensure_ruby_build_setup() {
 }
 
 ensure_ruby_build_installed() {
-    echo "got here"
+    local ruby_build_version
+
     if [ ! -f "$(ruby_build_path)" ]; then
         download_ruby_build
     else
-        local ruby_build_version="$("$(ruby_build_path)" --version | cut -d ' ' -f2)"
-        echo $ruby_build_version
-        if [ "$("$(ruby_build_path)" --version)" != "$RUBY_BUILD_VERSION" ]; then
+        current_ruby_build_version="$("$(ruby_build_path)" --version | cut -d ' ' -f2)"
+        if [ "$current_ruby_build_version" != "$RUBY_BUILD_VERSION" ]; then
             # If the ruby-build directory already exists and the version does not
             # match, remove it and download the correct version
             rm -rf "$(ruby_build_dir)"
@@ -33,27 +33,21 @@ download_ruby_build() {
 
     # Clone down and checkout the correct ruby-build version
     git clone https://github.com/rbenv/ruby-build.git $build_dir >&2 >/dev/null
-    $(cd $build_dir; git checkout $RUBY_BUILD_TAG)
+    (cd $build_dir; git checkout $RUBY_BUILD_TAG >&2 >/dev/null)
 
     # Install in the ruby-build dir
     PREFIX="$(ruby_build_dir)" ./$build_dir/install.sh
 
     # Remove ruby-build source dir
-    rm -rf ruby-build-source
+    rm -rf $build_dir
 }
 
 ruby_build_dir() {
-    echo "$(dirname "$(dirname $0)")/ruby-build"
+    echo "$(dirname "$(dirname "$0")")/ruby-build"
 }
 ruby_build_path() {
     echo "$(ruby_build_dir)/bin/ruby-build"
 }
 
 #set_ruby_build_env() {
-#    local kerl_home
-#    kerl_home="$(dirname "$(dirname "$0")")/kerl-home"
-#    mkdir -p "$kerl_home"
-#    export KERL_BASE_DIR="$kerl_home"
-#    export KERL_BUILD_BACKEND="git"
-#    export KERL_CONFIG="$kerl_home/.kerlrc"
 #}