diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index cf3f7e7..5abc406 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -2928,16 +2928,6 @@ checkMaxBetweenExclusiveImpl<true>(Node *n, int begin, int end,
         // up.
       }
       key = key.subspan(partialKeyIndex, key.size() - partialKeyIndex);
-
-    } else {
-      // Consider adding a partial key
-      if ((*self)->numChildren == 0 && !(*self)->entryPresent) {
-        assert((*self)->getCapacity() >= int(key.size()));
-        (*self)->partialKeyLen = key.size();
-        memcpy((*self)->partialKey(), key.data(), (*self)->partialKeyLen);
-        key = key.subspan((*self)->partialKeyLen,
-                          key.size() - (*self)->partialKeyLen);
-      }
     }
 
     assert(maxVersion(*self, impl) <= writeVersion);
@@ -2952,10 +2942,12 @@ checkMaxBetweenExclusiveImpl<true>(Node *n, int begin, int end,
       child = tls->allocate<Node0>(key.size() - 1);
       child->numChildren = 0;
       child->entryPresent = false;
-      child->partialKeyLen = 0;
+      child->partialKeyLen = key.size() - 1;
       child->parent = *self;
       child->parentsIndex = key.front();
-      setMaxVersion(child, impl, tls->zero);
+      setMaxVersion(child, impl, writeVersion);
+      memcpy(child->partialKey(), key.data() + 1, child->partialKeyLen);
+      return child;
     }
 
     self = &child;