diff --git a/lib/noosfero/version.rb b/lib/noosfero/version.rb
index e1ae838..eac128b 100644
--- a/lib/noosfero/version.rb
+++ b/lib/noosfero/version.rb
@@ -4,7 +4,7 @@ module Noosfero
 end
 
 root = File.expand_path(File.dirname(__FILE__) + '/../..')
-if File.exist?(File.join(root, '.git'))
+if File.exist?(File.join(root, '.git')) && system('which git >/dev/null')
   git_version = Dir.chdir(root) { `git describe --tags`.to_s.strip.sub('-rc', '~rc') }
   if git_version > Noosfero::VERSION
     Noosfero::VERSION.clear << git_version
--
libgit2 0.21.2