diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3ef8f8a2a0fd1afd86ca1197439e5137775085b0..41d25179c3ed0c748c96d92d3577577bde7270d0 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -7,6 +7,7 @@ config MIPS
 	select ARCH_CLOCKSOURCE_DATA
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_HAS_UBSAN_SANITIZE_ALL
+	select ARCH_HAS_FORTIFY_SOURCE
 	select ARCH_SUPPORTS_UPROBES
 	select ARCH_USE_BUILTIN_BSWAP
 	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
diff --git a/arch/mips/include/asm/string.h b/arch/mips/include/asm/string.h
index 29030cb398ee5d3a9e8b9ee3962c4bd09af01252..4b938c55b397f21b3ae6b56cbafe867258a2a97e 100644
--- a/arch/mips/include/asm/string.h
+++ b/arch/mips/include/asm/string.h
@@ -10,6 +10,7 @@
 #ifndef _ASM_STRING_H
 #define _ASM_STRING_H
 
+#if !defined(__OPTIMIZE__) || !defined(CONFIG_FORTIFY_SOURCE)
 
 /*
  * Most of the inline functions are rather naive implementations so I just
@@ -130,6 +131,7 @@ strncmp(__const__ char *__cs, __const__ char *__ct, size_t __count)
 	return __res;
 }
 #endif /* CONFIG_32BIT */
+#endif /* !defined(__OPTIMIZE__) || !defined(CONFIG_FORTIFY_SOURCE) */
 
 #define __HAVE_ARCH_MEMSET
 extern void *memset(void *__s, int __c, size_t __count);