diff --git a/lib/Target/SparcV9/SparcV9.td b/lib/Target/SparcV9/SparcV9.td
index f78317ddaed..2adc5006de7 100644
--- a/lib/Target/SparcV9/SparcV9.td
+++ b/lib/Target/SparcV9/SparcV9.td
@@ -24,6 +24,7 @@ class InstV9 : Instruction {          // SparcV9 instruction baseline
   field bits<32> Inst;
 
   let Namespace = "V9";
+  let ClassPrefix = "SparcV9";
 
   bits<2> op;
   let Inst{31-30} = op;               // Top two bits are the 'op' field