diff --git a/mlir/unittests/IR/AttributeTest.cpp b/mlir/unittests/IR/AttributeTest.cpp
--- a/mlir/unittests/IR/AttributeTest.cpp
+++ b/mlir/unittests/IR/AttributeTest.cpp
@@ -219,8 +219,8 @@
 static void checkNativeAccess(MLIRContext *ctx, ArrayRef<T> data,
                               Type elementType) {
   auto type = RankedTensorType::get(data.size(), elementType);
-  auto attr =
-      AttrT::get(type, "resource", UnmanagedAsmResourceBlob::allocate(data));
+  auto attr = AttrT::get(type, "resource",
+                         UnmanagedAsmResourceBlob::allocate(data, alignof(T)));
 
   // Check that we can access and iterate the data properly.
   Optional<ArrayRef<T>> attrData = attr.tryGetAsArrayRef();