diff --git a/make/bootstrap.lua b/make/bootstrap.lua
index 36b9ce966..3d2ce465b 100644
--- a/make/bootstrap.lua
+++ b/make/bootstrap.lua
@@ -48,7 +48,7 @@ local root; do
         if sep == '\\' then
             sep = '/\\'
         end
-        local pattern = "["..sep.."][^"..sep.."]+"
+        local pattern = "["..sep.."]+[^"..sep.."]+"
         root = package.cpath:match("([^;]+)"..pattern..pattern.."$")
         arg[0] = root .. package.config:sub(1,1) .. 'main.lua'
     end