diff --git a/include/openssl/conf.h b/include/openssl/conf.h
index e2c245c56f0f24be177133ee1c142ac81f5a4c34..24e9dee49fe8d39012f1d0397bc366d829513377 100644
--- a/include/openssl/conf.h
+++ b/include/openssl/conf.h
@@ -137,9 +137,9 @@ int CONF_dump_fp(LHASH_OF(CONF_VALUE) *conf, FILE *out);
 #endif
 int CONF_dump_bio(LHASH_OF(CONF_VALUE) *conf, BIO *out);
 
-#if OPENSSL_API_COMPAT < 0x10100000L
-void OPENSSL_config(const char *config_name);
+DEPRECATEDIN_1_1_0(void OPENSSL_config(const char *config_name))
 
+#if OPENSSL_API_COMPAT < 0x10100000L
 # define OPENSSL_no_config() \
     OPENSSL_init_crypto(OPENSSL_INIT_NO_LOAD_CONFIG, NULL)
 #endif
diff --git a/util/libeay.num b/util/libeay.num
index 0ca9f7b9ee9896b2532ce6e71b27b18130f3f6f9..4d503244646f87d799caea03af96749727c1398b 100755
--- a/util/libeay.num
+++ b/util/libeay.num
@@ -2691,7 +2691,7 @@ ENGINE_set_default_string               3184	1_1_0	EXIST::FUNCTION:ENGINE
 CONF_module_get_usr_data                3185	1_1_0	EXIST::FUNCTION:
 ASN1_add_oid_module                     3186	1_1_0	EXIST::FUNCTION:
 CONF_modules_finish                     3187	1_1_0	EXIST::FUNCTION:
-OPENSSL_config                          3188	1_1_0	EXIST::FUNCTION:
+OPENSSL_config                          3188	1_1_0	EXIST::FUNCTION:DEPRECATEDIN_1_1_0
 CONF_modules_unload                     3189	1_1_0	EXIST::FUNCTION:
 CONF_imodule_get_value                  3190	1_1_0	EXIST::FUNCTION:
 CONF_module_set_usr_data                3191	1_1_0	EXIST::FUNCTION: