diff --git a/lib/Analysis/CaptureTracking.cpp b/lib/Analysis/CaptureTracking.cpp
index 10a8b11..8767c18 100644
--- a/lib/Analysis/CaptureTracking.cpp
+++ b/lib/Analysis/CaptureTracking.cpp
@@ -44,7 +44,7 @@
 /// counts as capturing it or not.
 bool llvm::PointerMayBeCaptured(const Value *V,
                                 bool ReturnCaptures, bool StoreCaptures) {
-  assert(isa<PointerType>(V->getType()) && "Capture is for pointers only!");
+  assert(V->getType()->isPointerTy() && "Capture is for pointers only!");
   SmallVector<Use*, Threshold> Worklist;
   SmallSet<Use*, Threshold> Visited;
   int Count = 0;