diff --git a/test/MC/AsmParser/exprs-invalid.s b/test/MC/AsmParser/exprs-invalid.s
index 5358fc5d753..5baa9dd4c37 100644
--- a/test/MC/AsmParser/exprs-invalid.s
+++ b/test/MC/AsmParser/exprs-invalid.s
@@ -1,13 +1,5 @@
-// RUN: not llvm-mc -triple i386-unknown-unknown %s 2> %t
-// RUN: FileCheck -input-file %t %s
-
-// Currently XFAIL'ed, since the front-end isn't validating this. Figure out the
-// right resolution.
-//
-// XFAIL: *
-
-        .text
-a:
-        .data
-// CHECK: expected relocatable expression
-        .long -(0 + a)
+// RUN: not llvm-mc -triple x86_64-apple-darwin10 %s 2> %t.err | FileCheck %s
+// RUN: FileCheck --check-prefix=CHECK-ERRORS %s < %t.err
+// CHECK: 	.section	__TEXT,__text,regular,pure_instructions
+// CHECK-ERRORS: error: Invalid octal number
+.long 80+08