diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index c97f0b42755..f37f2bf6586 100644
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -567,10 +567,6 @@ def calltarget  : Operand<iPTR> {
 
 def imm64: Operand<i64>;
 
-def simm6 : Operand<i32> {
-  let ParserMatchClass = ConstantSImm6AsmOperandClass;
-  let OperandType = "OPERAND_IMMEDIATE";
-}
 def simm9 : Operand<i32>;
 def simm10 : Operand<i32>;
 def simm11 : Operand<i32>;
@@ -739,7 +735,7 @@ foreach I = {1, 2, 3, 4, 5, 6, 8} in
   }
 
 // Signed operands
-foreach I = {4, 5} in
+foreach I = {4, 5, 6} in
   def simm # I : Operand<i32> {
     let DecoderMethod = "DecodeSImmWithOffsetAndScale<" # I # ">";
     let ParserMatchClass =