diff --git a/sparse_matrix.h b/sparse_matrix.h
index 864b988c94e98df79eaf5713388f2dc1460d8e23..c6e720fe58aa7d7329be66fec5a5d5ff9cf7d017 100644
--- a/sparse_matrix.h
+++ b/sparse_matrix.h
@@ -123,7 +123,7 @@ namespace MISCMATHS {
       int nrows;
       int ncols;
 
-      vector<map<int,double>,single_client_alloc> data;
+      vector<map<int,double> > data;
 
     };