diff --git a/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.cpp b/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.cpp
index 953fe6d45dc..a0725209469 100644
--- a/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.cpp
+++ b/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.cpp
@@ -486,7 +486,7 @@ AluGroup::slots() const
    }
    if (m_addr_used) {
       ++result;
-      if (m_addr_is_index)
+      if (m_addr_is_index && s_max_slots == 5)
          ++result;
    }