diff --git a/test/MC/ARM/basic-thumb-instructions.s b/test/MC/ARM/basic-thumb-instructions.s
index b2e73452d29..df3d9e477cd 100644
--- a/test/MC/ARM/basic-thumb-instructions.s
+++ b/test/MC/ARM/basic-thumb-instructions.s
@@ -465,3 +465,23 @@ _func:
         str r2, [r7, r3]
 
 @ CHECK: str	r2, [r7, r3]            @ encoding: [0xfa,0x50]
+
+
+@------------------------------------------------------------------------------
+@ STRB (immediate)
+@------------------------------------------------------------------------------
+        strb r4, [r3]
+        strb r5, [r6, #0]
+        strb r6, [r7, #31]
+
+@ CHECK: strb	r4, [r3]                @ encoding: [0x1c,0x70]
+@ CHECK: strb	r5, [r6]                @ encoding: [0x35,0x70]
+@ CHECK: strb	r6, [r7, #31]           @ encoding: [0xfe,0x77]
+
+
+@------------------------------------------------------------------------------
+@ STRB (register)
+@------------------------------------------------------------------------------
+        strb r6, [r4, r5]
+
+@ CHECK: strb	r6, [r4, r5]            @ encoding: [0x66,0x55]