diff --git a/test/MC/X86/x86-32.s b/test/MC/X86/x86-32.s
index 95c5ea468d8..60178801efb 100644
--- a/test/MC/X86/x86-32.s
+++ b/test/MC/X86/x86-32.s
@@ -940,3 +940,9 @@ pshufw $90, %mm4, %mm0
 // CHECK: fsubp
 // CHECK: encoding: [0xde,0xe1]
 fsubp %st,%st(1)
+
+// PR9164
+// CHECK: fsubp	%st(2)
+// CHECK: encoding: [0xde,0xe2]
+fsubp   %st, %st(2)
+