diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 4c03af8bf0a..f74d1964390 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -1232,7 +1232,7 @@ def LDRBT : AI2ldbpo<(outs GPR:$dst, GPR:$base_wb),
 }
 
 def LDRSBT : AI3ldsbpo<(outs GPR:$dst, GPR:$base_wb),
-                 (ins GPR:$base,am2offset:$offset), LdMiscFrm, IIC_iLoadru,
+                 (ins GPR:$base,am3offset:$offset), LdMiscFrm, IIC_iLoadru,
                  "ldrsbt", "\t$dst, [$base], $offset", "$base = $base_wb", []> {
   let Inst{21} = 1; // overwrite
 }
diff --git a/test/MC/Disassembler/arm-tests.txt b/test/MC/Disassembler/arm-tests.txt
index 7d10107badf..47374da1949 100644
--- a/test/MC/Disassembler/arm-tests.txt
+++ b/test/MC/Disassembler/arm-tests.txt
@@ -18,6 +18,9 @@
 # CHECK:	ldr	r0, [r2], #15
 0x0f 0x00 0x92 0xe4
 
+# CHECK:	ldrsbtvs	lr, [r2], -r9
+0xd9 0xe9 0x32 0x60
+
 # CHECK:	lsls	r0, r2, #31
 0x82 0x0f 0xb0 0xe1