diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 59b49416ea..f916604433 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2016-03-24  Andrew Burgess  <andrew.burgess@embecosm.com>
+
+	* arc-opc.c (arc_operands): Fix operand flags for NPS_R_DST, and
+	NPS_R_SRC1.
+
 2016-03-30  Andrew Burgess  <andrew.burgess@embecosm.com>
 
 	* arc-nps400-tbl.h: Add a header comment, and fix some whitespace
diff --git a/opcodes/arc-opc.c b/opcodes/arc-opc.c
index 24d6f6b045..231ef4b543 100644
--- a/opcodes/arc-opc.c
+++ b/opcodes/arc-opc.c
@@ -1311,10 +1311,10 @@ const struct arc_operand arc_operands[] =
   { 3, 21, 0, ARC_OPERAND_IR | ARC_OPERAND_NCHK, insert_nps_3bit_src2, extract_nps_3bit_src2 },
 
 #define NPS_R_DST	(NPS_R_SRC2_3B + 1)
-  { 6, 21, 0, ARC_OPERAND_IR | ARC_OPERAND_NCHK, NULL, NULL },
+  { 6, 21, 0, ARC_OPERAND_IR, NULL, NULL },
 
 #define NPS_R_SRC1	(NPS_R_DST + 1)
-  { 6, 21, 0, ARC_OPERAND_IR | ARC_OPERAND_DUPLICATE | ARC_OPERAND_NCHK, NULL, NULL },
+  { 6, 21, 0, ARC_OPERAND_IR | ARC_OPERAND_DUPLICATE, NULL, NULL },
 
 #define NPS_BITOP_DST_POS	(NPS_R_SRC1 + 1)
   { 5, 5, 0, ARC_OPERAND_UNSIGNED, 0, 0 },