diff --git a/include/asm-ppc/mpc52xx.h b/include/asm-ppc/mpc52xx.h
index e5f80c22fbfcfc7d80095ef7c8397709136acb9c..04d56301345ba71e4d3b710c1ef65c8d368a08ce 100644
--- a/include/asm-ppc/mpc52xx.h
+++ b/include/asm-ppc/mpc52xx.h
@@ -107,7 +107,7 @@ enum ppc_sys_devices {
 #define MPC52xx_SDMA_IRQ_NUM	17
 #define MPC52xx_PERP_IRQ_NUM	23
 
-#define MPC52xx_CRIT_IRQ_BASE	0
+#define MPC52xx_CRIT_IRQ_BASE	1
 #define MPC52xx_MAIN_IRQ_BASE	(MPC52xx_CRIT_IRQ_BASE + MPC52xx_CRIT_IRQ_NUM)
 #define MPC52xx_SDMA_IRQ_BASE	(MPC52xx_MAIN_IRQ_BASE + MPC52xx_MAIN_IRQ_NUM)
 #define MPC52xx_PERP_IRQ_BASE	(MPC52xx_SDMA_IRQ_BASE + MPC52xx_SDMA_IRQ_NUM)