diff --git a/setup.py b/setup.py
index ca4ecbb181..2f7f10ac3e 100755
--- a/setup.py
+++ b/setup.py
@@ -181,6 +181,8 @@ def build_dir():
     EXTRA_COMPILE_ARGS.extend(['-arch', 'x86_64', '-mmacosx-version-min=10.7',
                                '-stdlib=libc++'])
     EXTRA_LINK_ARGS.append('-mmacosx-version-min=10.7')
+    EXTRA_LINK_ARGS.append('-stdlib=libc++')
+
 
 if check_for_openmp():
     EXTRA_COMPILE_ARGS.extend(['-fopenmp'])
diff --git a/src/oxli/assembler.cc b/src/oxli/assembler.cc
index cf79c6deb5..7740e81443 100644
--- a/src/oxli/assembler.cc
+++ b/src/oxli/assembler.cc
@@ -50,7 +50,7 @@ namespace oxli
  ********************************/
 
 LinearAssembler::LinearAssembler(const Hashgraph * ht) :
-    graph(ht), _ksize(ht->ksize())
+    _ksize(ht->ksize()), graph(ht)
 {
 
 }
@@ -344,7 +344,7 @@ const
  ***************************************/
 
 JunctionCountAssembler::JunctionCountAssembler(Hashgraph * ht) :
-    graph(ht), _ksize(ht->ksize()), traverser(ht), linear_asm(ht)
+    linear_asm(ht), traverser(ht), graph(ht), _ksize(ht->ksize())
 {
     std::vector<uint64_t> table_sizes = graph->get_tablesizes();
     junctions = new Countgraph(_ksize, table_sizes);
diff --git a/src/oxli/traversal.cc b/src/oxli/traversal.cc
index e3befe17c6..54f14099b2 100644
--- a/src/oxli/traversal.cc
+++ b/src/oxli/traversal.cc
@@ -52,7 +52,7 @@ namespace oxli
 template <bool direction>
 NodeGatherer<direction>::NodeGatherer(const Hashgraph * ht,
                                       KmerFilterList filters) :
-    KmerFactory(ht->ksize()), graph(ht), filters(filters)
+    KmerFactory(ht->ksize()), filters(filters), graph(ht)
 {
     bitmask = 0;
     for (unsigned int i = 0; i < _ksize; i++) {