2 files changed, 2 insertions, 2 deletions
diff --git a/gnuradio-core/src/lib/gengen/gr_vector_source_X.h.t b/gnuradio-core/src/lib/gengen/gr_vector_source_X.h.t
index 592467778a..041cc47a45 100644
--- a/gnuradio-core/src/lib/gengen/gr_vector_source_X.h.t
+++ b/gnuradio-core/src/lib/gengen/gr_vector_source_X.h.t
@@ -55,7 +55,7 @@ class @NAME@ : public gr_sync_block {
   virtual int work (int noutput_items,
 		    gr_vector_const_void_star &input_items,
 		    gr_vector_void_star &output_items);
-  void set_data(const std::vector<@TYPE@> &data, const std::vector<gr_tag_t> &tags);
+  void set_data(const std::vector<@TYPE@> &data, const std::vector<gr_tag_t> &tags =  std::vector<gr_tag_t>());
 };
 
 GR_CORE_API @NAME@_sptr
diff --git a/gnuradio-core/src/lib/gengen/gr_vector_source_X.i.t b/gnuradio-core/src/lib/gengen/gr_vector_source_X.i.t
index c661ca6d3f..1f1479f947 100644
--- a/gnuradio-core/src/lib/gengen/gr_vector_source_X.i.t
+++ b/gnuradio-core/src/lib/gengen/gr_vector_source_X.i.t
@@ -31,7 +31,7 @@ gr_make_@BASE_NAME@ (const std::vector<@TYPE@> &data, bool repeat = false, int v
 class @NAME@ : public gr_sync_block {
  public:
   void rewind();
-  void set_data(const std::vector<@TYPE@> &data, const std::vector<gr_tag_t> &tags);
+  void set_data(const std::vector<@TYPE@> &data, const std::vector<gr_tag_t> &tags = std::vector<gr_tag_t>());
  private:
   @NAME@ (const std::vector<@TYPE@> &data, bool repeat, int vlen, const std::vector<gr_tag_t> &tags);
 };