diff --git a/Source/Engine/Gramambular/Grid.h b/Source/Engine/Gramambular/Grid.h
index ee5a3bf3..e13c8eab 100644
--- a/Source/Engine/Gramambular/Grid.h
+++ b/Source/Engine/Gramambular/Grid.h
@@ -182,6 +182,10 @@ namespace Formosa {
             vector<NodeAnchor> nodes = nodesCrossingOrEndingAt(location);
             for (auto nodeAnchor : nodes) {
                 auto candidates = nodeAnchor.node->candidates();
+
+                // Reset the candidate-fixed state of every node at the location.
+                const_cast<Node*>(nodeAnchor.node)->resetCandidate();
+
                 for (size_t i = 0, c = candidates.size(); i < c; ++i) {
                     if (candidates[i].value == value) {
                         const_cast<Node*>(nodeAnchor.node)->selectCandidateAtIndex(i);
diff --git a/Source/Engine/Gramambular/Node.h b/Source/Engine/Gramambular/Node.h
index d4b7b432..89a74813 100644
--- a/Source/Engine/Gramambular/Node.h
+++ b/Source/Engine/Gramambular/Node.h
@@ -46,6 +46,7 @@ namespace Formosa {
             bool isCandidateFixed() const;
             const vector<KeyValuePair>& candidates() const;
             void selectCandidateAtIndex(size_t inIndex = 0, bool inFix = true);
+            void resetCandidate();
             
             const string& key() const;
             double score() const;
@@ -164,7 +165,16 @@ namespace Formosa {
             
             m_candidateFixed = inFix;
             m_score = 99;
-        }        
+        }
+
+        inline void Node::resetCandidate()
+        {
+            m_selectedUnigramIndex = 0;
+            m_candidateFixed = 0;
+            if (m_unigrams.size()) {
+                m_score = m_unigrams[0].score;
+            }
+        }
         
         inline const string& Node::key() const
         {