1 files changed, 2 insertions, 2 deletions
diff --git a/gr-blocks/lib/unpacked_to_packed_impl.h b/gr-blocks/lib/unpacked_to_packed_impl.h
index c1fb422ab2..a21f38ae8e 100644
--- a/gr-blocks/lib/unpacked_to_packed_impl.h
+++ b/gr-blocks/lib/unpacked_to_packed_impl.h
@@ -32,11 +32,11 @@ public:
     unpacked_to_packed_impl(unsigned int bits_per_chunk, endianness_t endianness);
     ~unpacked_to_packed_impl();
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 
     bool check_topology(int ninputs, int noutputs) { return ninputs == noutputs; }
 };