diff --git a/src/backend/libpq/be-secure-openssl.c b/src/backend/libpq/be-secure-openssl.c
index b2b0cccdae..a910ea2cb4 100644
--- a/src/backend/libpq/be-secure-openssl.c
+++ b/src/backend/libpq/be-secure-openssl.c
@@ -68,7 +68,7 @@ static bool dummy_ssl_passwd_cb_called = false;
 static bool ssl_is_server_start;
 
 static int ssl_protocol_version_to_openssl(int v, const char *guc_name);
-#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
+#ifndef SSL_CTX_set_min_proto_version
 static int SSL_CTX_set_min_proto_version(SSL_CTX *ctx, int version);
 static int SSL_CTX_set_max_proto_version(SSL_CTX *ctx, int version);
 #endif
@@ -1273,7 +1273,7 @@ error:
 /*
  * Replacements for APIs present in newer versions of OpenSSL
  */
-#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
+#ifndef SSL_CTX_set_min_proto_version
 
 /*
  * OpenSSL versions that support TLS 1.3 shouldn't get here because they
@@ -1327,4 +1327,4 @@ SSL_CTX_set_max_proto_version(SSL_CTX *ctx, int version)
 	return 1;					/* success */
 }
 
-#endif							/* OPENSSL_VERSION_NUMBER */
+#endif							/* !SSL_CTX_set_min_proto_version */