diff --git a/libs/util/include/psemek/util/array.hpp b/libs/util/include/psemek/util/array.hpp
index e8bf74b7..d58a0e76 100644
--- a/libs/util/include/psemek/util/array.hpp
+++ b/libs/util/include/psemek/util/array.hpp
@@ -164,7 +164,7 @@ namespace psemek::util
 
 			array_index_iterator & operator ++()
 			{
-				end = next(idx, dims);
+				end = !next(idx, dims);
 				return *this;
 			}
 		};