diff --git a/parasitics/SpefParse.yy b/parasitics/SpefParse.yy
index fbf37cf0..aca13ade 100755
--- a/parasitics/SpefParse.yy
+++ b/parasitics/SpefParse.yy
@@ -287,9 +287,7 @@ name_map_entries:
 
 name_map_entry:
 	INDEX mapped_item
-	{ reader->makeNameMapEntry($1, $2);
-	  sta::stringDelete($1);
-	}
+	{ reader->makeNameMapEntry($1, $2); }
 ;
 
 mapped_item:
diff --git a/parasitics/SpefReader.cc b/parasitics/SpefReader.cc
index cd69661d..049928b1 100644
--- a/parasitics/SpefReader.cc
+++ b/parasitics/SpefReader.cc
@@ -260,6 +260,8 @@ SpefReader::makeNameMapEntry(const char *index,
 {
   int i = atoi(index + 1);
   name_map_[i] = name;
+  stringDelete(index);
+  stringDelete(name);
 }
 
 const char *
diff --git a/search/Search.cc b/search/Search.cc
index 14c6fb77..2d633a14 100644
--- a/search/Search.cc
+++ b/search/Search.cc
@@ -368,6 +368,7 @@ Search::deleteTags()
   tag_free_indices_.clear();
 
   clk_info_set_->deleteContentsClear();
+  deleteTagsPrev();
 }
 
 void