diff --git a/engine.lua b/engine.lua
index 7d2aa31..a357e76 100644
--- a/engine.lua
+++ b/engine.lua
@@ -36,9 +36,8 @@ local function fair_split(length, shares)
     local sum_adj
     local remaining = #shares
     local spare = nil
+    local need_recompute = false
     repeat
-        local need_recompute = false
-
         sum_weight = 0
         sum_adj = 0
         for i = 1, #shares do