diff --git a/contrib/PyCuAmpcor/src/cuAmpcorChunk.cpp b/contrib/PyCuAmpcor/src/cuAmpcorChunk.cpp
index 9d69e6d23..71f50884d 100644
--- a/contrib/PyCuAmpcor/src/cuAmpcorChunk.cpp
+++ b/contrib/PyCuAmpcor/src/cuAmpcorChunk.cpp
@@ -603,6 +603,55 @@ cuAmpcorChunk::cuAmpcorChunk(cuAmpcorParameter *param_, GDALImage *reference_, G
 // destructor
 cuAmpcorChunk::~cuAmpcorChunk()
 {
+    corrNormalizerOverSampled.release();
+    corrNormalizerRaw.release();
+
+    if(param->oversamplingMethod) {
+        delete corrSincOverSampler;
+    }
+    else {
+        delete corrOverSampler;
+    }
+    if(param->algorithm == 0) {
+        delete cuCorrFreqDomain;
+        delete cuCorrFreqDomain_OverSampled;
+    }
+
+    delete ChunkOffsetDown ;
+    delete ChunkOffsetAcross ;
+    delete c_referenceBatchRaw;
+    delete c_secondaryBatchRaw;
+    delete r_referenceBatchRaw;
+    delete r_secondaryBatchRaw;
+    delete c_secondaryBatchZoomIn;
+    delete c_referenceBatchOverSampled;
+    delete c_secondaryBatchOverSampled;
+    delete r_referenceBatchOverSampled;
+    delete r_secondaryBatchOverSampled;
+    delete referenceBatchOverSampler;
+    delete secondaryBatchOverSampler;
+
+    delete r_corrBatchRaw;
+    delete r_corrBatchZoomIn;
+    delete r_corrBatchZoomInAdjust;
+    delete r_corrBatchZoomInOverSampled;
+    delete offsetInit;
+    delete offsetZoomIn;
+    delete offsetFinal;
+    delete maxLocShift;
+    delete corrMaxValue;
+
+    delete r_corrBatchRawZoomIn;
+    delete i_corrBatchZoomInValid;
+    delete r_corrBatchSum;
+    delete i_corrBatchValidCount;
+    delete i_maxloc;
+    delete r_maxval;
+    delete r_snrValue;
+    delete r_covValue;
+
+    // end of deletions
+
 }
 
 // end of file
diff --git a/contrib/PyCuAmpcor/src/cuAmpcorController.cpp b/contrib/PyCuAmpcor/src/cuAmpcorController.cpp
index 19518ea8f..0b08f433f 100644
--- a/contrib/PyCuAmpcor/src/cuAmpcorController.cpp
+++ b/contrib/PyCuAmpcor/src/cuAmpcorController.cpp
@@ -168,8 +168,9 @@ void cuAmpcorController::runAmpcor()
 
     for (int ist=0; ist<param->nStreams; ist++)
     {
-        checkCudaErrors(cudaStreamDestroy(streams[ist]));
+        // cufftplan etc are stream dependent, need to be deleted before stream is destroyed
         delete chunk[ist];
+        checkCudaErrors(cudaStreamDestroy(streams[ist]));
     }
 
     delete referenceImage;