diff --git a/openbr/plugins/integral.cpp b/openbr/plugins/integral.cpp
index 2738668..06f53d1 100644
--- a/openbr/plugins/integral.cpp
+++ b/openbr/plugins/integral.cpp
@@ -182,11 +182,12 @@ class RecursiveIntegralSamplerTransform : public Transform
         const SecondOrderInputDescriptor d(tmp.ptr<float>(3), channels, 1);
         const SecondOrderInputDescriptor e(tmp.ptr<float>(4), channels, 1);
 
-        dst = Mat(4, channels, CV_32FC1);
+        dst = Mat(5, channels, CV_32FC1);
         OutputDescriptor(dst.ptr<float>(0), channels, 1) = (a+b+c+d)/4.f;
         OutputDescriptor(dst.ptr<float>(1), channels, 1) = ((a+b+c+d)/4.f-e);
         OutputDescriptor(dst.ptr<float>(2), channels, 1) = ((a+b)-(c+d))/2.f;
         OutputDescriptor(dst.ptr<float>(3), channels, 1) = ((a+c)-(b+d))/2.f;
+        OutputDescriptor(dst.ptr<float>(4), channels, 1) = ((a+d)-(b+c))/2.f;
     }
 
     Template subdivide(const Template &src) const
diff --git a/openbr/plugins/quantize.cpp b/openbr/plugins/quantize.cpp
index 66ddc0d..ba53be2 100644
--- a/openbr/plugins/quantize.cpp
+++ b/openbr/plugins/quantize.cpp
@@ -286,7 +286,7 @@ class RecursiveProductQuantizationDistance : public Distance
 {
     Q_OBJECT
     Q_PROPERTY(float t READ get_t WRITE set_t RESET reset_t STORED false)
-    BR_PROPERTY(float, t, -1)
+    BR_PROPERTY(float, t, -std::numeric_limits<float>::max())
 
     float compare(const Template &a, const Template &b) const
     {