diff --git a/include/asm-x86/mpspec.h b/include/asm-x86/mpspec.h
index 6e9c9588b1fcdfa3452a5e968bcf4923891f746a..b8ba37496e2dde26d18bc746468906f7a5d01162 100644
--- a/include/asm-x86/mpspec.h
+++ b/include/asm-x86/mpspec.h
@@ -46,7 +46,11 @@ extern unsigned long mp_lapic_addr;
 
 extern void find_smp_config(void);
 extern void get_smp_config(void);
+#ifdef CONFIG_X86_MPPARSE
 extern void early_reserve_e820_mpc_new(void);
+#else
+static inline void early_reserve_e820_mpc_new(void) { }
+#endif
 
 void __cpuinit generic_processor_info(int apicid, int version);
 #ifdef CONFIG_ACPI