diff --git a/common/main/segment.h b/common/main/segment.h
index 6c23debd6..668ddf014 100644
--- a/common/main/segment.h
+++ b/common/main/segment.h
@@ -366,8 +366,8 @@ class visited_segment_bitarray_t : public visited_segment_mask_t<bool, 1>
 	};
 	struct bitproxy_t : public tmpl_bitproxy_t<array_t::reference>
 	{
-		bitproxy_t(array_t::reference byte, unsigned shift) :
-			tmpl_bitproxy_t<array_t::reference>(byte, shift)
+		bitproxy_t(array_t::reference byte, unsigned s) :
+			tmpl_bitproxy_t<array_t::reference>(byte, s)
 		{
 		}
 		bitproxy_t& operator=(bool b)