diff --git a/openbr/plugins/quantize.cpp b/openbr/plugins/quantize.cpp
index 5dd3bdf..1302846 100644
--- a/openbr/plugins/quantize.cpp
+++ b/openbr/plugins/quantize.cpp
@@ -183,8 +183,8 @@ private:
         QList<int> clusterLabels = OpenCVUtils::matrixToVector<int>(labels);
 
         QHash< int, QList<int> > clusters; // QHash<clusterLabel, QList<templateLabel>>
-        for (int i=0; i<clusterLabels.size(); i++)
-            clusters[clusterLabels[i]].append(templateLabels[i]);
+        for (int j=0; j<clusterLabels.size(); j++)
+            clusters[clusterLabels[j]].append(templateLabels[j]);
 
         for (int j=0; j<256; j++)
             for (int k=0; k<256; k++)
diff --git a/openbr/plugins/sentence.cpp b/openbr/plugins/sentence.cpp
index 3111767..9151364 100644
--- a/openbr/plugins/sentence.cpp
+++ b/openbr/plugins/sentence.cpp
@@ -77,7 +77,7 @@ class SentenceSimilarityDistance : public Distance
                 for (int i=0; i<aRows; i++)
                     for (int j=0; j<bRows; j++)
                         for (int k=0; k<aColumns; k++)
-                            distance += pow(aBuffer[i*aColumns+k] - bBuffer[j*bColumns+k], 2.f);
+                            distance += pow(aData[i*aColumns+k] - bData[j*bColumns+k], 2.f);
                 comparisons += aRows * bRows * aColumns;
                 aWord = -2;
                 bWord = -1;