diff --git a/stuff/printing.hh b/stuff/printing.hh
index c8b0f1ea581812031974654fa7e82d202439aa73..b3b7d0f0c50c59acab4048a68c8880d57350e8ac 100644
--- a/stuff/printing.hh
+++ b/stuff/printing.hh
@@ -323,7 +323,6 @@ void printFunctionMinMax(Stream& stream, const Function& func)
 template <class Matrix, class Stream>
 void matrixToGnuplotStream(const Matrix& matrix, Stream& stream)
 {
-  assert(false);
   unsigned long nz = 0;
   for (size_t row = 0; row < matrix.rows(); ++row) {
     for (size_t col = 0; col < matrix.cols(); ++col) {