diff --git a/include/swift/SIL/FieldSensitivePrunedLiveness.h b/include/swift/SIL/FieldSensitivePrunedLiveness.h
index 456ba6c387bee..c3ef2806d8a83 100644
--- a/include/swift/SIL/FieldSensitivePrunedLiveness.h
+++ b/include/swift/SIL/FieldSensitivePrunedLiveness.h
@@ -518,7 +518,7 @@ class FieldSensitivePrunedLiveBlocks {
     assert(!discoveredBlocks || discoveredBlocks->empty());
   }
 
-  bool isInitialized() const { return numBitsToTrack.hasValue(); }
+  bool isInitialized() const { return numBitsToTrack.has_value(); }
 
   unsigned getNumBitsToTrack() const { return *numBitsToTrack; }