diff --git a/firedrake/slate/slac/kernel_builder.py b/firedrake/slate/slac/kernel_builder.py
index 21846c4f5c..20284a0155 100644
--- a/firedrake/slate/slac/kernel_builder.py
+++ b/firedrake/slate/slac/kernel_builder.py
@@ -858,7 +858,7 @@ def generate_matfsolve_call(self, ctx, insn, expr):
              """,
              corner_case,
              f"""   <> alpha = rk_norm / p_on_Ap {{dep={preconverged_criterion_id}, id=alpha}}
-                    {x}[i_7] = {x}[i_7] + alpha*{p}[i_7] {{dep=ponAp, id=xk}}
+                    {x}[i_7] = {x}[i_7] + alpha*{p}[i_7] {{dep=alpha, id=xk}}
                     r[i_8] = r[i_8] + alpha*{A_on_p}[i_8] {{dep=xk,id=rk}}
                     
              """,