diff --git a/src/Observables/ObservableOutput.cpp b/src/Observables/ObservableOutput.cpp
index 5c053d997..b7a40846f 100644
--- a/src/Observables/ObservableOutput.cpp
+++ b/src/Observables/ObservableOutput.cpp
@@ -119,7 +119,7 @@ void ObservableOutput::_open_output() {
 }
 
 void ObservableOutput::init() {
-	if(!_update_name_with_time) {
+	if(!_update_name_with_time && !_only_last) {
 		_open_output();
 	}