diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h
index af80d3ce8cc..3b47a8ff94b 100644
--- a/include/llvm/CodeGen/AsmPrinter.h
+++ b/include/llvm/CodeGen/AsmPrinter.h
@@ -265,7 +265,7 @@ namespace llvm {
     /// used to print out constants which have been "spilled to memory" by
     /// the code generator.
     ///
-    void EmitConstantPool(MachineConstantPool *MCP);
+    virtual void EmitConstantPool(MachineConstantPool *MCP);
 
     /// EmitJumpTableInfo - Print assembly representations of the jump tables 
     /// used by the current function to the current output stream.