diff --git a/code/modules/wiremod/core/duplicator.dm b/code/modules/wiremod/core/duplicator.dm
index 581d6dc1760..b28981472e5 100644
--- a/code/modules/wiremod/core/duplicator.dm
+++ b/code/modules/wiremod/core/duplicator.dm
@@ -140,9 +140,12 @@ GLOBAL_LIST_INIT(circuit_dupe_whitelisted_types, list(
 		var/list/input_ports_stored_data = list()
 		for(var/datum/port/input/input as anything in component.input_ports)
 			var/list/connection_data = list()
-			if(!isnull(input.value) && (input.datatype in GLOB.circuit_dupe_whitelisted_types))
+			if(!length(input.connected_ports))
+				if(isnull(input.value) || !(input.datatype in GLOB.circuit_dupe_whitelisted_types))
+					continue
 				connection_data["stored_data"] = input.value
 				input_ports_stored_data[input.name] = connection_data
+				continue
 			connection_data["connected_ports"] = list()
 			for(var/datum/port/output/output as anything in input.connected_ports)
 				connection_data["connected_ports"] += list(list(