diff --git a/src/main/java/de/neemann/digital/core/Model.java b/src/main/java/de/neemann/digital/core/Model.java
index c181363b6..28835ddfc 100644
--- a/src/main/java/de/neemann/digital/core/Model.java
+++ b/src/main/java/de/neemann/digital/core/Model.java
@@ -443,8 +443,7 @@ public class Model implements Iterable<Node> {
         if (signal.isValid()) {
             signals.add(signal);
             outputs.add(signal);
-        } else
-            isInvalidSignal = true;
+        }
     }
 
     /**
diff --git a/src/main/resources/lang/lang_de.xml b/src/main/resources/lang/lang_de.xml
index 58446d382..c91b0fa6c 100644
--- a/src/main/resources/lang/lang_de.xml
+++ b/src/main/resources/lang/lang_de.xml
@@ -941,7 +941,7 @@ Die Icons stammen aus dem Tango Desktop Project.</string>
     <string name="msg_errInFile_N">Aufgetreten in Datei {0}.</string>
     <string name="msg_affectedComponentsAre_N">Betroffen sind: {0}.</string>
     <string name="msg_signal_N">Leitung {0}</string>
-    <string name="msg_invalidSignalsAnalysed">Wenn Ein- oder Ausgänge keinen Namen haben, werden diese nicht
+    <string name="msg_invalidSignalsAnalysed">Wenn Eingänge keinen Namen haben, werden diese nicht
         als Variablen in die Analyse einbezogen, sondern wie Konstanten behandelt!</string>
     <string name="msg_thereAreMissingPinNumbers">Für die Pins {0} wurden keine Pinnummern festgelegt!</string>
 
diff --git a/src/main/resources/lang/lang_en.xml b/src/main/resources/lang/lang_en.xml
index f4394efc2..dc5099171 100644
--- a/src/main/resources/lang/lang_en.xml
+++ b/src/main/resources/lang/lang_en.xml
@@ -928,7 +928,7 @@ The icons are taken from the Tango Desktop Project.</string>
     <string name="msg_errInFile_N">Occurred in file {0}.</string>
     <string name="msg_affectedComponentsAre_N">Affected are: {0}.</string>
     <string name="msg_signal_N">Signal {0}</string>
-    <string name="msg_invalidSignalsAnalysed">If inputs or outputs have no name set, they are not included
+    <string name="msg_invalidSignalsAnalysed">If inputs have no name set, they are not included
         as variables in the analysis, but treated as constants!</string>
     <string name="msg_thereAreMissingPinNumbers">No pin numbers assigned to the pins {0}!</string>