diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index f545a9c..2d4392c 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -556,8 +556,8 @@
   for (unsigned i = 0; i != MI.getNumOperands(); ++i)
     addOperand(MI.getOperand(i));
 
-  // Copy all the flags.
-  Flags = MI.Flags;
+  // Copy all the sensible flags.
+  setFlags(MI.Flags);
 
   // Set parent to null.
   Parent = 0;