Index: monitoring-plugins-2.2/plugins/check_snmp.c
===================================================================
--- monitoring-plugins-2.2.orig/plugins/check_snmp.c
+++ monitoring-plugins-2.2/plugins/check_snmp.c
@@ -588,7 +588,7 @@ main (int argc, char **argv)
 				strncat(perfstr, critical_thresholds, sizeof(perfstr)-strlen(perfstr)-1);
 			}
 
-			if (type)
+			if (type[0])
 				strncat(perfstr, type, sizeof(perfstr)-strlen(perfstr)-1);
 			strncat(perfstr, " ", sizeof(perfstr)-strlen(perfstr)-1);
 		}