diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp
index 27b07d9731a..36a245ff8c9 100644
--- a/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -949,7 +949,7 @@ static bool SpeculativelyExecuteBB(BranchInst *BI, BasicBlock *BB1) {
        UI != E; ++UI) {
     // Ignore any user that is not a PHI node in BB2.  These can only occur in
     // unreachable blocks, because they would not be dominated by the instr.
-    PHINode *PN = dyn_cast<PHINode>(UI);
+    PHINode *PN = dyn_cast<PHINode>(*UI);
     if (!PN || PN->getParent() != BB2)
       return false;
     PHIUses.push_back(PN);