3 files changed, 4 insertions, 3 deletions
diff --git a/Library/Formula/avra.rb b/Library/Formula/avra.rb
index ee6f161c8..9ea37caec 100644
--- a/Library/Formula/avra.rb
+++ b/Library/Formula/avra.rb
@@ -9,7 +9,8 @@ class Avra < Formula
 
   def install
     # build fails if these don't exist
-    system "touch NEWS ChangeLog"
+    touch 'NEWS'
+    touch 'ChangeLog'
     cd "src" do
       system "./bootstrap"
       system "./configure", "--prefix=#{prefix}"
diff --git a/Library/Formula/erlang.rb b/Library/Formula/erlang.rb
index 7c70d3443..6ebfc5ebc 100644
--- a/Library/Formula/erlang.rb
+++ b/Library/Formula/erlang.rb
@@ -91,7 +91,7 @@ class Erlang < Formula
     end
 
     system "./configure", *args
-    system "touch lib/wx/SKIP" if MacOS.snow_leopard?
+    touch 'lib/wx/SKIP' if MacOS.version >= :snow_leopard
     ENV.j1 # Parallel builds not working again as of at least R15B01
     system "make"
     system "make install"
diff --git a/Library/Formula/samba.rb b/Library/Formula/samba.rb
index fdc3b8d49..7dbae19b9 100644
--- a/Library/Formula/samba.rb
+++ b/Library/Formula/samba.rb
@@ -28,7 +28,7 @@ class Samba < Formula
                             "--with-configdir=#{prefix}/etc"
       system "make install"
       (prefix/'etc').mkpath
-      system "touch", "#{prefix}/etc/smb.conf"
+      touch prefix/'etc/smb.conf'
     end
   end
 end