diff --git a/src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp b/src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp
index e9de6fd66c6..4eeb2b0cfd6 100644
--- a/src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp
+++ b/src/gallium/drivers/r600/sfn/sfn_instr_alu.cpp
@@ -1357,8 +1357,10 @@ AluInstr::from_string(istream& is, ValueFactory& value_factory, AluGroup *group,
       if (op_descr.alu_opcode != op0_nop && op_descr.alu_opcode != op0_group_barrier) {
          if (dest)
             retval = new AluInstr(op_descr.alu_opcode, dest, sources, flags, slots);
-         else
+         else if (op_descr.nsrc < 3)
             retval = new AluInstr(op_descr.alu_opcode, chan, sources, flags);
+         else
+            retval = new AluInstr(op_descr.alu_opcode, value_factory.dummy_dest(chan), sources, flags, 1);
       } else {
          retval = new AluInstr(op_descr.alu_opcode, 0);
          for (auto f : flags)
diff --git a/src/gallium/drivers/r600/sfn/tests/sfn_instrfromstring_test.cpp b/src/gallium/drivers/r600/sfn/tests/sfn_instrfromstring_test.cpp
index 587c1a5c820..f0f6e104254 100644
--- a/src/gallium/drivers/r600/sfn/tests/sfn_instrfromstring_test.cpp
+++ b/src/gallium/drivers/r600/sfn/tests/sfn_instrfromstring_test.cpp
@@ -222,12 +222,12 @@ TEST_F(TestInstrFromString, test_alu_muladd_neg3)
    add_dest_from_string("R1999.w");
    add_dest_from_string("R2000.y");
    AluInstr expect(op3_muladd_ieee,
-                   1,
-                   {new Register(1999, 3, pin_none),
-                    new Register(1998, 2, pin_none),
-                    new Register(2000, 1, pin_none)},
+                   new Register(g_registers_unused, 1, pin_chan),
+                   new Register(1999, 3, pin_none),
+                   new Register(1998, 2, pin_none),
+                   new Register(2000, 1, pin_none),
                    {alu_last_instr});
-   check("ALU MULADD_IEEE __.y : R1999.w R1998.z -R2000.y {L}", expect);
+   check("ALU MULADD_IEEE __.y@chan : R1999.w R1998.z -R2000.y {L}", expect);
 }
 
 TEST_F(TestInstrFromString, test_alu_mov_bs)