diff --git a/llvm/tools/llvm-mca/Scheduler.h b/llvm/tools/llvm-mca/Scheduler.h
index 52957d9..f3b9a36 100644
--- a/llvm/tools/llvm-mca/Scheduler.h
+++ b/llvm/tools/llvm-mca/Scheduler.h
@@ -362,7 +362,7 @@
   bool canBeIssued(const InstrDesc &Desc) const;
 
   void issueInstruction(
-      unsigned Index, const InstrDesc &Desc,
+      const InstrDesc &Desc,
       llvm::SmallVectorImpl<std::pair<ResourceRef, double>> &Pipes);
 
   void cycleEvent(llvm::SmallVectorImpl<ResourceRef> &ResourcesFreed);