diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h
index 283322b7461..1cb8130e87d 100644
--- a/include/llvm/CodeGen/MachineBasicBlock.h
+++ b/include/llvm/CodeGen/MachineBasicBlock.h
@@ -338,7 +338,7 @@ public:
                             bool isCond);
 
   /// findDebugLoc - find the next valid DebugLoc starting at MBBI, skipping
-  /// any DEBUG_VALUE instructions.  Return UnknownLoc if there is none.
+  /// any DBG_VALUE instructions.  Return UnknownLoc if there is none.
   DebugLoc findDebugLoc(MachineBasicBlock::iterator &MBBI);
 
   // Debugging methods.
diff --git a/lib/CodeGen/DeadMachineInstructionElim.cpp b/lib/CodeGen/DeadMachineInstructionElim.cpp
index a888e6d71fb..b0cb24d95f7 100644
--- a/lib/CodeGen/DeadMachineInstructionElim.cpp
+++ b/lib/CodeGen/DeadMachineInstructionElim.cpp
@@ -112,7 +112,7 @@ bool DeadMachineInstructionElim::runOnMachineFunction(MachineFunction &MF) {
       MachineInstr *MI = &*MII;
 
       if (MI->isDebugValue()) {
-        // Don't delete the DEBUG_VALUE itself, but if its Value operand is
+        // Don't delete the DBG_VALUE itself, but if its Value operand is
         // a vreg and this is the only use, substitute an undef operand;
         // the former operand will then be deleted normally.
         if (MI->getNumOperands()==3 && MI->getOperand(0).isReg()) {
@@ -120,7 +120,7 @@ bool DeadMachineInstructionElim::runOnMachineFunction(MachineFunction &MF) {
           MachineRegisterInfo::use_iterator I = MRI->use_begin(Reg);
           assert(I != MRI->use_end());
           if (++I == MRI->use_end())
-            // only one use, which must be this DEBUG_VALUE.
+            // only one use, which must be this DBG_VALUE.
             MI->getOperand(0).setReg(0U);
         }
       }