diff --git a/src/cc/prices.cpp b/src/cc/prices.cpp
index 4c83fd72b..da1098d50 100644
--- a/src/cc/prices.cpp
+++ b/src/cc/prices.cpp
@@ -1337,12 +1337,12 @@ UniValue PricesInfo(uint256 bettxid, int32_t refheight)
             for (auto b : bets) {
                 totalbets += b.amount;
                 totalprofits += b.profits;
-                costbasis += b.amount * b.costbasis;
+                costbasis += b.amount * b.costbasis / PRICES_NORMFACTOR;  // prevent overflow
                 std::cerr << "PricesInfo() acc costbasis=" << costbasis << " b.amount=" << b.amount << " b.costbasis=" << b.costbasis << std::endl;
             }
 
             int64_t equity = totalbets + totalprofits;
-            costbasis /= totalbets;
+            costbasis /= totalbets * PRICES_NORMFACTOR;
             int64_t liqprice = costbasis - costbasis / leverage;