diff --git a/install.rb b/install.rb
index de87717..096d809 100644
--- a/install.rb
+++ b/install.rb
@@ -1,6 +1,9 @@
-puts "Adding setup_xapit.rb initializer."
-File.open("#{Rails.root}/config/initializers/setup_xapit.rb", "w") do |f|
-  f.write <<-STR
+path = "#{Rails.root}/config/initializers/setup_xapit.rb"
+unless File.exist? path
+  puts "Adding setup_xapit.rb initializer."
+  File.open(path, "w") do |f|
+    f.write <<-EOS
 Xapit::Config.setup(:database_path => "\#{Rails.root}/db/xapiandb")
-STR
+EOS
+  end
 end
diff --git a/uninstall.rb b/uninstall.rb
index 857171a..5d4d58f 100644
--- a/uninstall.rb
+++ b/uninstall.rb
@@ -1,2 +1,5 @@
-puts "Removing setup_xapit.rb initializer."
-File.delete("#{Rails.root}/config/initializers/setup_xapit.rb")
+path = "#{Rails.root}/config/initializers/setup_xapit.rb"
+if File.exist? path
+  puts "Removing setup_xapit.rb initializer."
+  File.delete(path)
+end