diff --git a/include/llvm/Analysis/PostDominators.h b/include/llvm/Analysis/PostDominators.h
index 07910e9538c..27c2b26c8c2 100644
--- a/include/llvm/Analysis/PostDominators.h
+++ b/include/llvm/Analysis/PostDominators.h
@@ -29,6 +29,8 @@ struct PostDominatorTree : public FunctionPass {
     DT = new DominatorTreeBase<BasicBlock>(true);
   }
 
+  ~PostDominatorTree();
+
   virtual bool runOnFunction(Function &F);
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
diff --git a/lib/Analysis/PostDominators.cpp b/lib/Analysis/PostDominators.cpp
index 4330e9039d1..c72b140a622 100644
--- a/lib/Analysis/PostDominators.cpp
+++ b/lib/Analysis/PostDominators.cpp
@@ -37,6 +37,11 @@ bool PostDominatorTree::runOnFunction(Function &F) {
   return false;
 }
 
+PostDominatorTree::~PostDominatorTree()
+{
+  delete DT;
+}
+
 //===----------------------------------------------------------------------===//
 //  PostDominanceFrontier Implementation
 //===----------------------------------------------------------------------===//