diff --git a/include/grgsm/misc_utils/tmsi_dumper.h b/include/grgsm/misc_utils/tmsi_dumper.h
index 88e9941..8ea19a4 100644
--- a/include/grgsm/misc_utils/tmsi_dumper.h
+++ b/include/grgsm/misc_utils/tmsi_dumper.h
@@ -35,7 +35,7 @@
      * \ingroup gsm
      *
      */
-    class GSM_API tmsi_dumper : virtual public gr::block
+    class GRGSM_API tmsi_dumper : virtual public gr::block
     {
      public:
       typedef boost::shared_ptr<tmsi_dumper> sptr;