diff --git a/lib/Transforms/Hello/Hello.cpp b/lib/Transforms/Hello/Hello.cpp
index 9f2343b3b31..9251783e4a9 100644
--- a/lib/Transforms/Hello/Hello.cpp
+++ b/lib/Transforms/Hello/Hello.cpp
@@ -52,7 +52,7 @@ namespace {
       return false;
     }
 
-    // We don't modify the program, so we preserve all analyses
+    // We don't modify the program, so we preserve all analyses.
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.setPreservesAll();
     }