diff --git a/src/main/java/com/android/tools/r8/ir/optimize/classinliner/FieldValueHelper.java b/src/main/java/com/android/tools/r8/ir/optimize/classinliner/FieldValueHelper.java
index d06b3f9..832e8b9 100644
--- a/src/main/java/com/android/tools/r8/ir/optimize/classinliner/FieldValueHelper.java
+++ b/src/main/java/com/android/tools/r8/ir/optimize/classinliner/FieldValueHelper.java
@@ -111,6 +111,11 @@
       // we just created for future use we should delay removing trivial
       // phis until we are done with replacing fields reads.
       phi.addOperands(operands, false);
+
+      TypeLatticeElement phiType = phi.computePhiType(appView);
+      assert phiType.lessThanOrEqual(phi.getTypeLattice(), appView);
+      phi.setTypeLattice(phiType);
+
       value = phi;
     }