diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h
index 4cf4b35..3f78122 100644
--- a/include/llvm/CodeGen/MachineBasicBlock.h
+++ b/include/llvm/CodeGen/MachineBasicBlock.h
@@ -45,8 +45,8 @@
   static void setPrev(MachineInstr* N, MachineInstr* prev) { N->prev = prev; }
   static void setNext(MachineInstr* N, MachineInstr* next) { N->next = next; }
 
-  static MachineInstr* createSentinal();
-  static void destroySentinal(MachineInstr *MI) { delete MI; }
+  static MachineInstr* createSentinel();
+  static void destroySentinel(MachineInstr *MI) { delete MI; }
   void addNodeToList(MachineInstr* N);
   void removeNodeFromList(MachineInstr* N);
   void transferNodesFromList(
diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h
index ffd941d..fee690a 100644
--- a/include/llvm/CodeGen/MachineFunction.h
+++ b/include/llvm/CodeGen/MachineFunction.h
@@ -55,8 +55,8 @@
     N->Next = next;
   }
 
-  static MachineBasicBlock* createSentinal();
-  static void destroySentinal(MachineBasicBlock *MBB) { delete MBB; }
+  static MachineBasicBlock* createSentinel();
+  static void destroySentinel(MachineBasicBlock *MBB) { delete MBB; }
   void addNodeToList(MachineBasicBlock* N);
   void removeNodeFromList(MachineBasicBlock* N);
   void transferNodesFromList(iplist<MachineBasicBlock,