diff -Nurp openhpi-3.6.0-orig/plugins/snmp_bc/snmp_bc_session.c openhpi-3.6.0/plugins/snmp_bc/snmp_bc_session.c
--- openhpi-3.6.0-orig/plugins/snmp_bc/snmp_bc_session.c	2015-09-17 12:40:43.357513842 +0200
+++ openhpi-3.6.0/plugins/snmp_bc/snmp_bc_session.c	2015-09-17 13:54:53.386358885 +0200
@@ -201,14 +201,17 @@ void *snmp_bc_open(GHashTable *handler_c
 				}
 				
 				custom_handle->session.securityLevel = SNMP_SEC_LEVEL_AUTHNOPRIV;
+#ifndef DISABLE_MD5
 				if (!authtype || !g_ascii_strncasecmp(authtype, "MD5", sizeof("MD5"))) {
 					custom_handle->session.securityAuthProto = usmHMACMD5AuthProtocol;
 					custom_handle->session.securityAuthProtoLen = USM_AUTH_PROTO_MD5_LEN;
-				} else if (!g_ascii_strncasecmp(authtype, "SHA", sizeof("SHA"))) {
+				} else 
+#endif
+				if (!g_ascii_strncasecmp(authtype, "SHA", sizeof("SHA"))) {
 					custom_handle->session.securityAuthProto = usmHMACSHA1AuthProtocol;
 					custom_handle->session.securityAuthProtoLen = USM_AUTH_PROTO_SHA_LEN;
 				} else {
-					err("Unrecognized authenication type=%s.", authtype); 
+					err("Unrecognized or unsupported authenication type=%s.", authtype); 
 					return NULL;
 				}