diff --git a/src/amd/compiler/aco_register_allocation.cpp b/src/amd/compiler/aco_register_allocation.cpp
index 9600b92b121..75b06865959 100644
--- a/src/amd/compiler/aco_register_allocation.cpp
+++ b/src/amd/compiler/aco_register_allocation.cpp
@@ -2091,6 +2091,7 @@ operand_can_use_reg(amd_gfx_level gfx_level, aco_ptr<Instruction>& instr, unsign
               gfx_level >= GFX10); /* sdata can be vcc */
    case Format::MUBUF:
    case Format::MTBUF: return idx != 2 || gfx_level < GFX12 || reg != scc;
+   case Format::SOPK: return idx != 0 || reg != scc;
    default:
       // TODO: there are more instructions with restrictions on registers
       return true;