diff --git a/include/pcg_random.hpp b/include/pcg_random.hpp
index d479a81..341c865 100644
--- a/include/pcg_random.hpp
+++ b/include/pcg_random.hpp
@@ -333,7 +333,7 @@ class specific_stream {
 
     void set_stream(itype specific_seq)
     {
-         inc_ = (specific_seq << 1) | 1;
+         inc_ = (specific_seq << 1) | itype(1U);
     }
 
     static constexpr bool can_specify_stream = true;