diff --git a/include/const_list.h b/include/const_list.h
index 25a48f3..3329419 100644
--- a/include/const_list.h
+++ b/include/const_list.h
@@ -439,6 +439,7 @@ namespace cc {
 				auto next = std::next(first2);
 
 				first1._node->push_before(first2._node);
+				++_size;
 
 				first2 = next;
 			} else {
@@ -450,6 +451,7 @@ namespace cc {
 			auto next = std::next(first2);
 
 			_tail.push_before(first2._node);
+			++_size;
 
 			first2 = next;
 		}
@@ -473,6 +475,7 @@ namespace cc {
 				auto next = std::next(first2);
 
 				first1._node->push_before(first2._node);
+				++_size;
 
 				first2 = next;
 			} else {
@@ -484,6 +487,7 @@ namespace cc {
 			auto next = std::next(first2);
 
 			_tail.push_before(first2._node);
+			++_size;
 
 			first2 = next;
 		}