diff --git a/include/grgsm/qa_utils/burst_source.h b/include/grgsm/qa_utils/burst_source.h
index bfed70f..67c881c 100644
--- a/include/grgsm/qa_utils/burst_source.h
+++ b/include/grgsm/qa_utils/burst_source.h
@@ -34,7 +34,7 @@
      * \ingroup gsm
      *
      */
-    class GSM_API burst_source : virtual public gr::block
+    class GRGSM_API burst_source : virtual public gr::block
     {
      public:
       typedef boost::shared_ptr<burst_source> sptr;