diff --git a/NEWS b/NEWS
index c6f445ee838..3710589bc95 100644
--- a/NEWS
+++ b/NEWS
@@ -52,6 +52,10 @@ PHP                                                                        NEWS
   . Fixed bug #65825 (PDOStatement::fetch() does not throw exception on broken
     server connection). (Nikita)
 
+- SNMP:
+  . Fixed bug #70461 (disable md5 code when it is not supported in net-snmp).
+    (Alexander Bergmann, cmb)
+
 29 Oct 2020, PHP 7.4.12
 
 - Core:
diff --git a/ext/snmp/snmp.c b/ext/snmp/snmp.c
index f2f55d19b57..3ecd461f0c5 100644
--- a/ext/snmp/snmp.c
+++ b/ext/snmp/snmp.c
@@ -1204,10 +1204,13 @@ static int netsnmp_session_set_sec_level(struct snmp_session *s, char *level)
    Set the authentication protocol in the snmpv3 session */
 static int netsnmp_session_set_auth_protocol(struct snmp_session *s, char *prot)
 {
+#ifndef DISABLE_MD5
 	if (!strcasecmp(prot, "MD5")) {
 		s->securityAuthProto = usmHMACMD5AuthProtocol;
 		s->securityAuthProtoLen = USM_AUTH_PROTO_MD5_LEN;
-	} else if (!strcasecmp(prot, "SHA")) {
+	} else
+#endif
+	if (!strcasecmp(prot, "SHA")) {
 		s->securityAuthProto = usmHMACSHA1AuthProtocol;
 		s->securityAuthProtoLen = USM_AUTH_PROTO_SHA_LEN;
 	} else {