diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index a4fdb09..8588061 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -2884,11 +2884,10 @@ struct __attribute__((visibility("hidden"))) ConflictSet::Impl {
       const auto &r = reads[i];
       auto begin = std::span<const uint8_t>(r.begin.p, r.begin.len);
       auto end = std::span<const uint8_t>(r.end.p, r.end.len);
+      assert(oldestVersionFullPrecision >=
+             newestVersionFullPrecision - kNominalVersionWindow);
       result[i] =
-          reads[i].readVersion < oldestVersionFullPrecision ||
-                  reads[i].readVersion <
-                      newestVersionFullPrecision - kNominalVersionWindow
-              ? TooOld
+          reads[i].readVersion < oldestVersionFullPrecision ? TooOld
           : (end.size() > 0
                  ? checkRangeRead(root, begin, end,
                                   InternalVersionT(reads[i].readVersion), this)