diff --git a/llvm/test/MC/X86/x86-32.s b/llvm/test/MC/X86/x86-32.s
index c104f45a406e..7407767f7a5f 100644
--- a/llvm/test/MC/X86/x86-32.s
+++ b/llvm/test/MC/X86/x86-32.s
@@ -783,6 +783,10 @@ pshufw $90, %mm4, %mm0
 // CHECK:  encoding: [0xdb,0xe2]
         	fnclex
 
+// CHECK: ud2
+// CHECK:  encoding: [0x0f,0x0b]
+        	ud2
+
 // CHECK: ud2
 // CHECK:  encoding: [0x0f,0x0b]
         	ud2a