diff --git a/src/response.c b/src/response.c
index 2acee4e..0cde2f8 100644
--- a/src/response.c
+++ b/src/response.c
@@ -85,10 +85,13 @@ void icmp_response(const struct icmphdr *icmphdr, const struct scan *data)
 		}
 	}
 
-	data->responses->service = get_service_name(data->port_start, "udp");
 	if (data->responses->service == NULL)
-		data->responses->service =
-		    get_service_name(data->port_start, "tcp");
+	{
+		data->responses->service = get_service_name(data->port_start, "udp");
+		if (data->responses->service == NULL)
+			data->responses->service =
+				get_service_name(data->port_start, "tcp");
+	}
 	if (data->type & SCAN_SYN && icmphdr->type == 3)
 		data->responses->states[type_index] = FILTERED;
 	else if (data->type & SCAN_ACK && icmphdr->type == 3)
@@ -117,10 +120,13 @@ void no_response(const struct scan *data)
 		}	
 	}
 
-	data->responses->service = get_service_name(data->port_start, "udp");
 	if (data->responses->service == NULL)
-		data->responses->service =
-		    get_service_name(data->port_start, "tcp");
+	{
+		data->responses->service = get_service_name(data->port_start, "udp");
+		if (data->responses->service == NULL)
+			data->responses->service =
+				get_service_name(data->port_start, "tcp");
+	}
 	if (data->type & SCAN_SYN)
 		data->responses->states[type_index] = FILTERED;
 	else if (data->type & SCAN_ACK)