diff --git a/include/gnuradio/iqbalance/fix_cc.h b/include/gnuradio/iqbalance/fix_cc.h
index 34a99b4..bf40982 100644
--- a/include/gnuradio/iqbalance/fix_cc.h
+++ b/include/gnuradio/iqbalance/fix_cc.h
@@ -24,7 +24,7 @@ namespace gr {
       float d_mag, d_phase;
 
      public:
-      typedef boost::shared_ptr<fix_cc> sptr;
+      typedef std::shared_ptr<fix_cc> sptr;
 
       static sptr make(float mag=0.0f, float phase=0.0f);
 
diff --git a/include/gnuradio/iqbalance/optimize_c.h b/include/gnuradio/iqbalance/optimize_c.h
index 9b378af..24688de 100644
--- a/include/gnuradio/iqbalance/optimize_c.h
+++ b/include/gnuradio/iqbalance/optimize_c.h
@@ -26,7 +26,7 @@ namespace gr {
       float d_mag, d_phase;
 
      public:
-      typedef boost::shared_ptr<optimize_c> sptr;
+      typedef std::shared_ptr<optimize_c> sptr;
 
       static sptr make(int period=0);