diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index fdd1f4b8c448e4c1fa6611bb9456f5e9c9d30070..3c8bd8ee0b95e70e17e801913eb7481030ebcfae 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -1284,6 +1284,36 @@ static bool tomoyo_is_select_one(struct tomoyo_io_buffer *head,
 	return true;
 }
 
+/**
+ * tomoyo_delete_domain - Delete a domain.
+ *
+ * @domainname: The name of domain.
+ *
+ * Returns 0.
+ */
+static int tomoyo_delete_domain(char *domainname)
+{
+	struct tomoyo_domain_info *domain;
+	struct tomoyo_path_info name;
+
+	name.name = domainname;
+	tomoyo_fill_path_info(&name);
+	down_write(&tomoyo_domain_list_lock);
+	/* Is there an active domain? */
+	list_for_each_entry(domain, &tomoyo_domain_list, list) {
+		/* Never delete tomoyo_kernel_domain */
+		if (domain == &tomoyo_kernel_domain)
+			continue;
+		if (domain->is_deleted ||
+		    tomoyo_pathcmp(domain->domainname, &name))
+			continue;
+		domain->is_deleted = true;
+		break;
+	}
+	up_write(&tomoyo_domain_list_lock);
+	return 0;
+}
+
 /**
  * tomoyo_write_domain_policy - Write domain policy.
  *
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index 6d6ba09af4576b27d6aba92edad7d3c7b03515b3..31df541911f76f3d5cc39c92508eb37a25fb8545 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -339,8 +339,6 @@ const char *tomoyo_get_last_name(const struct tomoyo_domain_info *domain);
 const char *tomoyo_get_msg(const bool is_enforce);
 /* Convert single path operation to operation name. */
 const char *tomoyo_sp2keyword(const u8 operation);
-/* Delete a domain. */
-int tomoyo_delete_domain(char *data);
 /* Create "alias" entry in exception policy. */
 int tomoyo_write_alias_policy(char *data, const bool is_delete);
 /*
diff --git a/security/tomoyo/domain.c b/security/tomoyo/domain.c
index 1d8b16960576891615d7d523626d527030cf31bc..e68b1052354bc76727b1333ac5095eac652b5f81 100644
--- a/security/tomoyo/domain.c
+++ b/security/tomoyo/domain.c
@@ -717,38 +717,6 @@ int tomoyo_write_alias_policy(char *data, const bool is_delete)
 	return tomoyo_update_alias_entry(data, cp, is_delete);
 }
 
-/* Domain create/delete handler. */
-
-/**
- * tomoyo_delete_domain - Delete a domain.
- *
- * @domainname: The name of domain.
- *
- * Returns 0.
- */
-int tomoyo_delete_domain(char *domainname)
-{
-	struct tomoyo_domain_info *domain;
-	struct tomoyo_path_info name;
-
-	name.name = domainname;
-	tomoyo_fill_path_info(&name);
-	down_write(&tomoyo_domain_list_lock);
-	/* Is there an active domain? */
-	list_for_each_entry(domain, &tomoyo_domain_list, list) {
-		/* Never delete tomoyo_kernel_domain */
-		if (domain == &tomoyo_kernel_domain)
-			continue;
-		if (domain->is_deleted ||
-		    tomoyo_pathcmp(domain->domainname, &name))
-			continue;
-		domain->is_deleted = true;
-		break;
-	}
-	up_write(&tomoyo_domain_list_lock);
-	return 0;
-}
-
 /**
  * tomoyo_find_or_assign_new_domain - Create a domain.
  *