1 files changed, 1 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/MachineOperand.h b/include/llvm/CodeGen/MachineOperand.h
index a782ff538c..7fb2b9e767 100644
--- a/include/llvm/CodeGen/MachineOperand.h
+++ b/include/llvm/CodeGen/MachineOperand.h
@@ -97,7 +97,7 @@ private:
     } OffsetedInfo;
   } Contents;
   
-  MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {}
+  explicit MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {}
 public:
   MachineOperand(const MachineOperand &M) {
     *this = M;