diff --git a/llvm/test/tools/llvm-objcopy/MachO/universal-object.test b/llvm/test/tools/llvm-objcopy/MachO/universal-object.test
--- a/llvm/test/tools/llvm-objcopy/MachO/universal-object.test
+++ b/llvm/test/tools/llvm-objcopy/MachO/universal-object.test
@@ -26,6 +26,7 @@
 ## Case 3: copy an archive containing a universal object.
 # RUN: llvm-ar cr %t.archive.containing.universal %t.universal
 # RUN: llvm-objcopy %t.archive.containing.universal %t.archive.containing.universal.copy
+# RUN: cmp %t.archive.containing.universal %t.archive.containing.universal.copy
 
 ## Case 4: try to copy a universal object file contaning a bitcode slice.
 # RUN: echo 'target triple = "arm64-apple-ios8.0.0"' | llvm-as -o %t.bitcode