diff --git a/lib/Transforms/Scalar/Reassociate.cpp b/lib/Transforms/Scalar/Reassociate.cpp
index c220c2bcc16..c33e3206dca 100644
--- a/lib/Transforms/Scalar/Reassociate.cpp
+++ b/lib/Transforms/Scalar/Reassociate.cpp
@@ -53,7 +53,7 @@ namespace {
   }
 }
 
-#ifndef DEBUG
+#ifndef NDEBUG
 /// PrintOps - Print out the expression identified in the Ops list.
 ///
 static void PrintOps(Instruction *I, const std::vector<ValueEntry> &Ops) {