diff --git a/hw/ppc_prep.c b/hw/ppc_prep.c
index 0b880a5c7c..be2b26830d 100644
--- a/hw/ppc_prep.c
+++ b/hw/ppc_prep.c
@@ -441,9 +441,9 @@ static void cpu_request_exit(void *opaque, int irq, int level)
 
 static void ppc_prep_reset(void *opaque)
 {
-    CPUPPCState *env = opaque;
+    PowerPCCPU *cpu = opaque;
 
-    cpu_state_reset(env);
+    cpu_reset(CPU(cpu));
 }
 
 /* PowerPC PREP hardware initialisation */
@@ -502,7 +502,7 @@ static void ppc_prep_init (ram_addr_t ram_size,
             /* Set time-base frequency to 100 Mhz */
             cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
         }
-        qemu_register_reset(ppc_prep_reset, env);
+        qemu_register_reset(ppc_prep_reset, cpu);
     }
 
     /* allocate RAM */