1 files changed, 3 insertions, 0 deletions
diff --git a/setup.lua b/setup.lua
index 94d5302e..1be66ddd 100755
--- a/setup.lua
+++ b/setup.lua
@@ -17,6 +17,9 @@ end
 
 dofile(basedir..'/ninja.lua')
 config = dofile 'config.lua'
+if not config.prefix then
+	config.prefix = ''
+end
 
 local recurse = not arg[1]