diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index b9d3ba78794e..1f85e9225909 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -220,8 +220,10 @@ void MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const {
           OS << "imp-";
         OS << "def";
         NeedComma = true;
-      } else if (isImplicit())
+      } else if (isImplicit()) {
           OS << "imp-use";
+          NeedComma = true;
+      }
 
       if (isKill() || isDead() || isUndef()) {
         if (NeedComma) OS << ',';