diff --git a/include/llvm/CodeGen/IntrinsicLowering.h b/include/llvm/CodeGen/IntrinsicLowering.h
index 9d4d89a0acf..7f0cd81ca6e 100644
--- a/include/llvm/CodeGen/IntrinsicLowering.h
+++ b/include/llvm/CodeGen/IntrinsicLowering.h
@@ -37,6 +37,7 @@ namespace llvm {
   class CallInst;
   
   struct IntrinsicLowering {
+    virtual ~IntrinsicLowering() {}
 
     /// LowerIntrinsicCall - This method returns the LLVM function which should
     /// be used to implement the specified intrinsic function call.  If an
diff --git a/include/llvm/IntrinsicLowering.h b/include/llvm/IntrinsicLowering.h
index 9d4d89a0acf..7f0cd81ca6e 100644
--- a/include/llvm/IntrinsicLowering.h
+++ b/include/llvm/IntrinsicLowering.h
@@ -37,6 +37,7 @@ namespace llvm {
   class CallInst;
   
   struct IntrinsicLowering {
+    virtual ~IntrinsicLowering() {}
 
     /// LowerIntrinsicCall - This method returns the LLVM function which should
     /// be used to implement the specified intrinsic function call.  If an