diff --git a/graph/Graph.cc b/graph/Graph.cc
index 2f82db92..df30bf0c 100644
--- a/graph/Graph.cc
+++ b/graph/Graph.cc
@@ -924,10 +924,13 @@ Graph::delayAnnotated(Edge *edge)
   while (arc_iter->hasNext()) {
     TimingArc *arc = arc_iter->next();
     for (DcalcAPIndex ap_index = 0; ap_index < ap_count_; ap_index++) {
-      if (arcDelayAnnotated(edge, arc, ap_index))
+      if (arcDelayAnnotated(edge, arc, ap_index)) {
+	delete arc_iter;
 	return true;
+      }
     }
   }
+  delete arc_iter;
   return false;
 }
 
diff --git a/sdc/Sdc.cc b/sdc/Sdc.cc
index acfc5e65..8fd70e77 100644
--- a/sdc/Sdc.cc
+++ b/sdc/Sdc.cc
@@ -2173,7 +2173,9 @@ Sdc::makeClkGroupSame(ClockGroup *group)
       Clock *clk2 = clk_iter2.next();
       if (clk1->index() <= clk2->index()) {
 	ClockPair *clk_pair = new ClockPair(clk1, clk2);
-	if (!clk_group_same_->hasKey(clk_pair))
+	if (clk_group_same_->hasKey(clk_pair))
+	  delete clk_pair;
+	else
 	  clk_group_same_->insert(clk_pair);
       }
     }