diff --git a/llvm/lib/MC/MCNullStreamer.cpp b/llvm/lib/MC/MCNullStreamer.cpp
index d1cd006..364c324 100644
--- a/llvm/lib/MC/MCNullStreamer.cpp
+++ b/llvm/lib/MC/MCNullStreamer.cpp
@@ -96,7 +96,7 @@
     virtual void EmitInstruction(const MCInst &Inst) {}
 
     virtual void EmitBundleAlignMode(unsigned AlignPow2) {}
-    virtual void EmitBundleLock() {}
+    virtual void EmitBundleLock(bool AlignToEnd) {}
     virtual void EmitBundleUnlock() {}
 
     virtual void FinishImpl() {}