1 files changed, 1 insertions, 1 deletions
diff --git a/gr-blocks/lib/vector_source_impl.cc b/gr-blocks/lib/vector_source_impl.cc
index d49c37f5dd..24a21854f2 100644
--- a/gr-blocks/lib/vector_source_impl.cc
+++ b/gr-blocks/lib/vector_source_impl.cc
@@ -114,7 +114,7 @@ namespace gr {
           }
         }
         else {
-          for(int i = 0; i < noutput_items*d_vlen; i++) {
+          for(int i = 0; i < static_cast<int>(noutput_items*d_vlen); i++) {
             optr[i] = d_data[offset++];
             if(offset >= size) {
               offset = 0;