diff --git a/lib/MC/MCInst.cpp b/lib/MC/MCInst.cpp
index 521b57fa239..7ef69be66df 100644
--- a/lib/MC/MCInst.cpp
+++ b/lib/MC/MCInst.cpp
@@ -34,7 +34,7 @@ void MCOperand::print(raw_ostream &OS) const {
 
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 void MCOperand::dump() const {
-  print(dbgs(), nullptr);
+  print(dbgs());
   dbgs() << "\n";
 }
 #endif
@@ -65,7 +65,7 @@ void MCInst::dump_pretty(raw_ostream &OS, const MCInstPrinter *Printer,
 
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 void MCInst::dump() const {
-  print(dbgs(), nullptr);
+  print(dbgs());
   dbgs() << "\n";
 }
 #endif