1 files changed, 1 insertions, 1 deletions
diff --git a/gr-blocks/lib/correctiq_swapiq_impl.h b/gr-blocks/lib/correctiq_swapiq_impl.h
index 5995caa884..6eeaa93ea6 100644
--- a/gr-blocks/lib/correctiq_swapiq_impl.h
+++ b/gr-blocks/lib/correctiq_swapiq_impl.h
@@ -23,7 +23,7 @@ namespace blocks {
 class swap_iq_impl : public swap_iq
 {
 private:
-    int d_datatype;
+    const int d_datatype;
 
 public:
     swap_iq_impl(int datatype, int datasize);