diff --git a/llvm/lib/Transforms/Scalar/ConstantProp.cpp b/llvm/lib/Transforms/Scalar/ConstantProp.cpp
index dbbc86142cf0..05bb4f0c7be7 100644
--- a/llvm/lib/Transforms/Scalar/ConstantProp.cpp
+++ b/llvm/lib/Transforms/Scalar/ConstantProp.cpp
@@ -14,7 +14,7 @@
 //
 // Notice that:
 //   * This pass has a habit of making definitions be dead.  It is a good idea
-//     to to run a DIE pass sometime after running this pass.
+//     to run a DIE pass sometime after running this pass.
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/llvm/lib/VMCore/ConstantFold.h b/llvm/lib/VMCore/ConstantFold.h
index fddee237654a..49aea11870af 100644
--- a/llvm/lib/VMCore/ConstantFold.h
+++ b/llvm/lib/VMCore/ConstantFold.h
@@ -11,8 +11,8 @@
 // interfaces are used by the ConstantExpr::get* methods to automatically fold
 // constants when possible.
 //
-// These operators may return a null object if I don't know how to perform the
-// specified operation on the specified constant types.
+// These operators may return a null object if they don't know how to perform
+// the specified operation on the specified constant types.
 //
 //===----------------------------------------------------------------------===//