diff --git a/package/luarocks/buildroot.lua b/package/luarocks/buildroot.lua
index 2d160f02b6..3c044d89b5 100644
--- a/package/luarocks/buildroot.lua
+++ b/package/luarocks/buildroot.lua
@@ -265,10 +265,10 @@ local function generate_hash (rockspec, lcname, rock_file, licenses, digest)
    local f = assert(io.open(fname, 'w'))
    util.printout('write ' .. fname)
    f:write('# computed by luarocks/buildroot\n')
-   f:write('sha256 ' .. digest[rock_file] .. '  ' .. rock_file .. '\n')
+   f:write('sha256  ' .. digest[rock_file] .. '  ' .. rock_file .. '\n')
    for i = 1, #licenses do
       local file = licenses[i]
-      f:write('sha256 ' .. digest[file] .. '  ' .. subdir .. '/' .. file .. '\n')
+      f:write('sha256  ' .. digest[file] .. '  ' .. subdir .. '/' .. file .. '\n')
    end
    f:close()
 end