diff --git a/src/amd/llvm/ac_nir_to_llvm.c b/src/amd/llvm/ac_nir_to_llvm.c
index 54e115221c2..fdcb3c5e597 100644
--- a/src/amd/llvm/ac_nir_to_llvm.c
+++ b/src/amd/llvm/ac_nir_to_llvm.c
@@ -2348,7 +2348,7 @@ static void visit_store_output(struct ac_nir_context *ctx, nir_intrinsic_instr *
    unsigned writemask = nir_intrinsic_write_mask(instr);
    unsigned component = nir_intrinsic_component(instr);
    LLVMValueRef src = ac_to_float(&ctx->ac, get_src(ctx, instr->src[0]));
-   nir_src offset = *nir_get_io_offset_src(instr);
+   ASSERTED nir_src offset = *nir_get_io_offset_src(instr);
 
    /* No indirect indexing is allowed here. */
    assert(nir_src_is_const(offset) && nir_src_as_uint(offset) == 0);