diff --git a/llvm/lib/Target/CBackend/CBackend.cpp b/llvm/lib/Target/CBackend/CBackend.cpp
index 90200db..7c24037 100644
--- a/llvm/lib/Target/CBackend/CBackend.cpp
+++ b/llvm/lib/Target/CBackend/CBackend.cpp
@@ -660,7 +660,7 @@
 
   if (isString) {
     Out << '\"';
-    // Keep track of whether the last number was a hexadecimal escape
+    // Keep track of whether the last number was a hexadecimal escape.
     bool LastWasHex = false;
 
     // Do not include the last character, which we know is null