--- mqtt/src/dl.c	2012/02/01 15:04:24	1.2.2.1
+++ mqtt/src/dl.c	2012/02/01 15:44:40	1.2.2.2
@@ -99,7 +99,8 @@ mqttLoadRTLM(sl_config *cfg, int modtype)
 			call.DeletePUB_subscribe = dlsym(rtlm, "mqtt_rtlm_delete_subscribe");
 			if (!call.InitSessPUB || !call.FiniSessPUB || !call.ChkSessPUB || 
 					!call.WritePUB_topic || !call.ReadPUB_topic || 
-					!call.DeletePUB_topic) {
+					!call.DeletePUB_topic || !call.WritePUB_subscribe || 
+					!call.ReadPUB_subscribe || !call.DeletePUB_subscribe) {
 				mqttLog("Error:: incorrect module ...\n");
 				dlclose(rtlm);
 				return NULL;