diff --git a/mex/sources/estimation/libmat/QRDecomposition.cc b/mex/sources/estimation/libmat/QRDecomposition.cc
index 38106c12d..2b353ef7d 100644
--- a/mex/sources/estimation/libmat/QRDecomposition.cc
+++ b/mex/sources/estimation/libmat/QRDecomposition.cc
@@ -34,5 +34,6 @@ QRDecomposition::QRDecomposition(size_t rows_arg, size_t cols_arg, size_t cols2_
 QRDecomposition::~QRDecomposition()
 {
   delete[] work;
+  delete[] work2;
   delete[] tau;
 }