diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index ca37a19..412de1c 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -660,7 +660,7 @@
     if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
       visit(CE->getOpcode(), *CE);
       SDValue N1 = NodeMap[V];
-      assert(N1.getNode() && "visit didn't populate the ValueMap!");
+      assert(N1.getNode() && "visit didn't populate the NodeMap!");
       return N1;
     }