diff --git a/sdc/Sdc.cc b/sdc/Sdc.cc
index 9fec7507..85ee1950 100644
--- a/sdc/Sdc.cc
+++ b/sdc/Sdc.cc
@@ -702,9 +702,9 @@ Sdc::swapDeratingFactors(Sdc *sdc1,
 void
 Sdc::deleteDeratingFactors()
 {
-  deleteContentsClear(net_derating_factors_);
-  deleteContentsClear(inst_derating_factors_);
-  deleteContentsClear(cell_derating_factors_);
+  deleteContents(net_derating_factors_);
+  deleteContents(inst_derating_factors_);
+  deleteContents(cell_derating_factors_);
 
   delete derating_factors_;
   derating_factors_ = nullptr;