diff --git a/security/tomoyo/audit.c b/security/tomoyo/audit.c
index d79bf07e16be..023bedd9dfa3 100644
--- a/security/tomoyo/audit.c
+++ b/security/tomoyo/audit.c
@@ -166,7 +166,7 @@ static char *tomoyo_print_header(struct tomoyo_request_info *r)
 		       "#%04u/%02u/%02u %02u:%02u:%02u# profile=%u mode=%s granted=%s (global-pid=%u) task={ pid=%u ppid=%u uid=%u gid=%u euid=%u egid=%u suid=%u sgid=%u fsuid=%u fsgid=%u }",
 		       stamp.year, stamp.month, stamp.day, stamp.hour,
 		       stamp.min, stamp.sec, r->profile, tomoyo_mode[r->mode],
-		       tomoyo_yesno(r->granted), gpid, tomoyo_sys_getpid(),
+		       str_yes_no(r->granted), gpid, tomoyo_sys_getpid(),
 		       tomoyo_sys_getppid(),
 		       from_kuid(&init_user_ns, current_uid()),
 		       from_kgid(&init_user_ns, current_gid()),
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index 5c64927bf2b3..ff17abc96e5c 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -8,6 +8,7 @@
 #include <linux/uaccess.h>
 #include <linux/slab.h>
 #include <linux/security.h>
+#include <linux/string_helpers.h>
 #include "common.h"
 
 /* String table for operation mode. */
@@ -174,16 +175,6 @@ static bool tomoyo_manage_by_non_root;
 
 /* Utility functions. */
 
-/**
- * tomoyo_yesno - Return "yes" or "no".
- *
- * @value: Bool value.
- */
-const char *tomoyo_yesno(const unsigned int value)
-{
-	return value ? "yes" : "no";
-}
-
 /**
  * tomoyo_addprintf - strncat()-like-snprintf().
  *
@@ -730,8 +721,8 @@ static void tomoyo_print_config(struct tomoyo_io_buffer *head, const u8 config)
 {
 	tomoyo_io_printf(head, "={ mode=%s grant_log=%s reject_log=%s }\n",
 			 tomoyo_mode[config & 3],
-			 tomoyo_yesno(config & TOMOYO_CONFIG_WANT_GRANT_LOG),
-			 tomoyo_yesno(config & TOMOYO_CONFIG_WANT_REJECT_LOG));
+			 str_yes_no(config & TOMOYO_CONFIG_WANT_GRANT_LOG),
+			 str_yes_no(config & TOMOYO_CONFIG_WANT_REJECT_LOG));
 }
 
 /**
@@ -1354,8 +1345,8 @@ static bool tomoyo_print_condition(struct tomoyo_io_buffer *head,
 	case 3:
 		if (cond->grant_log != TOMOYO_GRANTLOG_AUTO)
 			tomoyo_io_printf(head, " grant_log=%s",
-					 tomoyo_yesno(cond->grant_log ==
-						      TOMOYO_GRANTLOG_YES));
+					 str_yes_no(cond->grant_log ==
+						    TOMOYO_GRANTLOG_YES));
 		tomoyo_set_lf(head);
 		return true;
 	}
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index 85246b9df7ca..ca285f362705 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -959,7 +959,6 @@ char *tomoyo_read_token(struct tomoyo_acl_param *param);
 char *tomoyo_realpath_from_path(const struct path *path);
 char *tomoyo_realpath_nofollow(const char *pathname);
 const char *tomoyo_get_exe(void);
-const char *tomoyo_yesno(const unsigned int value);
 const struct tomoyo_path_info *tomoyo_compare_name_union
 (const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr);
 const struct tomoyo_path_info *tomoyo_get_domainname