diff --git a/lib/Target/Alpha/AlphaISelLowering.cpp b/lib/Target/Alpha/AlphaISelLowering.cpp
index fda3096e3cf..1b22f754459 100644
--- a/lib/Target/Alpha/AlphaISelLowering.cpp
+++ b/lib/Target/Alpha/AlphaISelLowering.cpp
@@ -210,11 +210,15 @@ static SDOperand LowerFORMAL_ARGUMENTS(SDOperand Op, SelectionDAG &DAG,
         std::cerr << "Unknown Type " << ObjectVT << "\n";
         abort();
       case MVT::f64:
-      case MVT::f32:
         args_float[ArgNo] = AddLiveIn(MF, args_float[ArgNo], 
 				      &Alpha::F8RCRegClass);
         ArgVal = DAG.getCopyFromReg(Root, args_float[ArgNo], ObjectVT);
         break;
+      case MVT::f32:
+        args_float[ArgNo] = AddLiveIn(MF, args_float[ArgNo], 
+				      &Alpha::F4RCRegClass);
+        ArgVal = DAG.getCopyFromReg(Root, args_float[ArgNo], ObjectVT);
+        break;
       case MVT::i64:
         args_int[ArgNo] = AddLiveIn(MF, args_int[ArgNo], 
 				    &Alpha::GPRCRegClass);