diff --git a/constraint_solver/collect_variables.cc b/constraint_solver/collect_variables.cc
index 3da837cad2..b39dd9aed8 100644
--- a/constraint_solver/collect_variables.cc
+++ b/constraint_solver/collect_variables.cc
@@ -176,7 +176,7 @@ class CollectVariablesVisitor : public ModelVisitor {
       }
       for (int j = 0; j < matrix.columns; ++j) {
         if (counters[j].size() == matrix.rows) {
-          vector<const IntVar*> vars =
+          const std::vector<const IntVar*>& vars =
               top()->FindIntegerVariableArrayArgumentOrDie(
                   ModelVisitor::kVarsArgument);
           LOG(INFO) << "Found index variable in allowed assignment constraint: "
@@ -189,6 +189,20 @@ class CollectVariablesVisitor : public ModelVisitor {
           break;
         }
       }
+    } else if (type_name.compare(ModelVisitor::kNoCycle) == 0) {
+      const std::vector<const IntVar*>& vars =
+          top()->FindIntegerVariableArrayArgumentOrDie(
+              ModelVisitor::kActiveArgument);
+      for (int i = 0; i < vars.size(); ++i) {
+        IgnoreIntegerVariable(const_cast<IntVar*>(vars[i]));
+      }
+    } else if (type_name.compare(ModelVisitor::kPathCumul) == 0) {
+      const std::vector<const IntVar*>& vars =
+          top()->FindIntegerVariableArrayArgumentOrDie(
+              ModelVisitor::kActiveArgument);
+      for (int i = 0; i < vars.size(); ++i) {
+        IgnoreIntegerVariable(const_cast<IntVar*>(vars[i]));
+      }
     }
     PopArgumentHolder();
   }
diff --git a/constraint_solver/expr_array.cc b/constraint_solver/expr_array.cc
index 3d2f0a33ba..afe0db4b83 100644
--- a/constraint_solver/expr_array.cc
+++ b/constraint_solver/expr_array.cc
@@ -1402,7 +1402,7 @@ IntExpr* Solver::MakeSum(IntVar* const* vars, int size) {
       sum_max += vars[i]->Max();
     }
     IntVar* const sum_var = MakeIntVar(sum_min, sum_max);
-    AddConstraint(RevAlloc(new SumConstraint(this, vars, size, sum_var)));,
+    AddConstraint(RevAlloc(new SumConstraint(this, vars, size, sum_var)));
     return sum_var;
   }
 }