diff --git a/test/MC/Disassembler/XCore/xcore.txt b/test/MC/Disassembler/XCore/xcore.txt
index eae9bedc0a7..882d73a0e26 100644
--- a/test/MC/Disassembler/XCore/xcore.txt
+++ b/test/MC/Disassembler/XCore/xcore.txt
@@ -398,6 +398,9 @@
 # CHECK: st16 r5, r3[r8]
 0xdc 0xfc 0xec 0x87
 
+# CHECK: st8 r9, r1[r3]
+0x97 0xf8 0xec 0x8f
+
 # CHECK: stw r7, r10[r1]
 0xf9 0xf9 0xec 0x07