diff --git a/openbr/plugins/cuda/MatManager.cu b/openbr/plugins/cuda/MatManager.cu
index 41d1137..510dda3 100644
--- a/openbr/plugins/cuda/MatManager.cu
+++ b/openbr/plugins/cuda/MatManager.cu
@@ -41,7 +41,7 @@ namespace br { namespace cuda {
     sem_init(_matSemaphore, 0, _numMats);
   }
 
-  MatManager::matindex MatManager::reserve(Mat *mat) {
+  MatManager::matindex MatManager::reserve(Mat &mat) {
     int reservedMatIndex = 0;
     //std::cout << "Reserving" << std::endl << std::flush;
 
@@ -66,16 +66,11 @@ namespace br { namespace cuda {
 
     // reallocate if size does not match
     pthread_mutex_lock(_matsDimensionLock);
-    if (*_matsDimension[reservedMatIndex] != mat->rows * mat->cols) {
-      //printSizeChangingMat(reservedMat);
-      //reservedMat->release();
-      //reservedMat->create(mat->size(), mat->type());
-      //std::cout << "Size mismatch" << std::endl << std::flush;
-      // re malloc
+    if (*_matsDimension[reservedMatIndex] != mat.rows * mat.cols) {
       cudaFree(_mats[reservedMatIndex]); // free the previous memory first
-      cudaMalloc(&_mats[reservedMatIndex], mat->rows * mat->cols * sizeof(uint8_t));
+      cudaMalloc(&_mats[reservedMatIndex], mat.rows * mat.cols * sizeof(uint8_t));
       // change the dimension of that matrix
-      *_matsDimension[reservedMatIndex] = mat->rows * mat->cols;
+      *_matsDimension[reservedMatIndex] = mat.rows * mat.cols;
 
     }
     pthread_mutex_unlock(_matsDimensionLock);
diff --git a/openbr/plugins/cuda/MatManager.hpp b/openbr/plugins/cuda/MatManager.hpp
index b7713eb..2731d7b 100644
--- a/openbr/plugins/cuda/MatManager.hpp
+++ b/openbr/plugins/cuda/MatManager.hpp
@@ -28,7 +28,7 @@ namespace br { namespace cuda {
     typedef int matindex;
     MatManager(int num);
 
-    int reserve(Mat *mat);
+    int reserve(Mat &mat);
     void upload(matindex reservedMatIndex, Mat& mat);
     void download(matindex reservedMatIndex, Mat& dstMat);
     void release(matindex matIndex);
diff --git a/openbr/plugins/cuda/cudalbp.cpp b/openbr/plugins/cuda/cudalbp.cpp
index d7756a8..fd85f43 100644
--- a/openbr/plugins/cuda/cudalbp.cpp
+++ b/openbr/plugins/cuda/cudalbp.cpp
@@ -156,13 +156,13 @@ class CUDALBPTransform : public UntrainableTransform
         Mat& m = (Mat&)src.m();
         cuda::MatManager::matindex a;
         cuda::MatManager::matindex b;
-        a = matManager->reserve(&m);
+        a = matManager->reserve(m);
 //        std::cout << "m: " << m.size() << ", " << m.type() << std::endl << std::flush;
 //        std::cout << "a: " << a->size() << ", " << a->type() << std::endl << std::flush;
         matManager->upload(a, m);
 
         // reserve the second mat and check the dimensiosn
-        b = matManager->reserve(&m);
+        b = matManager->reserve(m);
         //matManager->matchDimensions(b, a);
         
         //std::cout << "Coming to here" << std::endl << std::flush;