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-rw-r--r--gr-blocks/lib/multiply_matrix_impl.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/gr-blocks/lib/multiply_matrix_impl.cc b/gr-blocks/lib/multiply_matrix_impl.cc
index b9c7ed1dce..e1b9c746c6 100644
--- a/gr-blocks/lib/multiply_matrix_impl.cc
+++ b/gr-blocks/lib/multiply_matrix_impl.cc
@@ -212,7 +212,7 @@ typename multiply_matrix<T>::sptr
multiply_matrix<T>::make(std::vector<std::vector<T>> A,
gr::block::tag_propagation_policy_t tag_propagation_policy)
{
- if (A.empty() || A[0].size() == 0) {
+ if (A.empty() || A[0].empty()) {
throw std::invalid_argument("matrix A has invalid dimensions.");
}
return gnuradio::get_initial_sptr(