diff --git a/liberty/TableModel.cc b/liberty/TableModel.cc
index 1c759b8b..e5a6f7ee 100644
--- a/liberty/TableModel.cc
+++ b/liberty/TableModel.cc
@@ -774,8 +774,8 @@ Table1::Table1(FloatSeq *values,
 Table1::~Table1()
 {
   delete values_;
-  //if (own_axis1_)
-  //delete axis1_;
+  if (own_axis1_)
+    delete axis1_;
 }
 
 float
diff --git a/liberty/TimingArc.cc b/liberty/TimingArc.cc
index 81dcdfc3..1ec88ed3 100644
--- a/liberty/TimingArc.cc
+++ b/liberty/TimingArc.cc
@@ -67,9 +67,11 @@ TimingArcAttrs::~TimingArcAttrs()
 {
   if (cond_)
     cond_->deleteSubexprs();
+  if (sdf_cond_start_ != sdf_cond_)
+    stringDelete(sdf_cond_start_);
+  if (sdf_cond_end_ != sdf_cond_)
+    stringDelete(sdf_cond_end_);
   stringDelete(sdf_cond_);
-  stringDelete(sdf_cond_start_);
-  stringDelete(sdf_cond_end_);
   stringDelete(mode_name_);
   stringDelete(mode_value_);
   delete models_[RiseFall::riseIndex()];