diff --git a/src/test/utils/DSTestPlus.sol b/src/test/utils/DSTestPlus.sol
index bb1772d4..8a677394 100644
--- a/src/test/utils/DSTestPlus.sol
+++ b/src/test/utils/DSTestPlus.sol
@@ -149,7 +149,7 @@ contract DSTestPlus is DSTest {
         uint256 x,
         uint256 min,
         uint256 max
-    ) internal returns (uint256 result) {
+    ) internal virtual returns (uint256 result) {
         require(max >= min, "MAX_LESS_THAN_MIN");
 
         uint256 size = max - min;