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-rw-r--r--doc/contributing.rdoc2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/contributing.rdoc b/doc/contributing.rdoc
index 46322ba0f0..7be8cc2275 100644
--- a/doc/contributing.rdoc
+++ b/doc/contributing.rdoc
@@ -312,7 +312,7 @@ Now let's build CRuby:
autoconf
mkdir build && cd build # its good practice to build outside of source dir
mkdir ~/.rubies # we will install to .rubies/ruby-trunk in our home dir
- ../configure --prefix="$HOME/.rubies/ruby-trunk"
+ ../configure --prefix="${HOME}/.rubies/ruby-trunk"
make && make install
After adding Ruby to your PATH, you should be ready to run the test suite: