diff --git a/contrib/binutils/gas/config/tc-arm.c b/contrib/binutils/gas/config/tc-arm.c
index 08dbb6fff88..a74e868faf0 100644
--- a/contrib/binutils/gas/config/tc-arm.c
+++ b/contrib/binutils/gas/config/tc-arm.c
@@ -6571,6 +6571,7 @@ do_barrier (void)
   if (inst.operands[0].present)
     {
       constraint ((inst.instruction & 0xf0) != 0x40
+		  && (inst.instruction & 0xf0) != 0x50
 		  && inst.operands[0].imm != 0xf,
 		  "bad barrier type");
       inst.instruction |= inst.operands[0].imm;