diff --git a/src/test/java/de/neemann/digital/analyse/ModelAnalyserTest.java b/src/test/java/de/neemann/digital/analyse/ModelAnalyserTest.java
index 2eaceb59b..1df121e96 100644
--- a/src/test/java/de/neemann/digital/analyse/ModelAnalyserTest.java
+++ b/src/test/java/de/neemann/digital/analyse/ModelAnalyserTest.java
@@ -117,6 +117,17 @@ public class ModelAnalyserTest extends TestCase {
     public void testAnalyzerMultiBit2() throws Exception {
         Model model = new ToBreakRunner("dig/analyze/multiBitInOut.dig", false).getModel();
         TruthTable tt = new ModelAnalyser(model).analyse();
+        checkIdent(tt);
+    }
+
+    // test with non zero default values set
+    public void testAnalyzerMultiBit3() throws Exception {
+        Model model = new ToBreakRunner("dig/analyze/multiBitInOutDef.dig", false).getModel();
+        TruthTable tt = new ModelAnalyser(model).analyse();
+        checkIdent(tt);
+    }
+
+    private void checkIdent(TruthTable tt) {
         assertEquals("B0",tt.getResultName(0));
         final BoolTable r0 = tt.getResult(0);
         assertEquals(4,r0.size());
@@ -134,5 +145,4 @@ public class ModelAnalyserTest extends TestCase {
         assertEquals(one,r1.get(3));
     }
 
-
 }
\ No newline at end of file
diff --git a/src/test/resources/dig/analyze/multiBitInOutDef.dig b/src/test/resources/dig/analyze/multiBitInOutDef.dig
new file mode 100644
index 000000000..a0b820083
--- /dev/null
+++ b/src/test/resources/dig/analyze/multiBitInOutDef.dig
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<circuit>
+  <version>1</version>
+  <attributes/>
+  <visualElements>
+    <visualElement>
+      <elementName>In</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Label</string>
+          <string>A</string>
+        </entry>
+        <entry>
+          <string>Bits</string>
+          <int>2</int>
+        </entry>
+        <entry>
+          <string>Default</string>
+          <int>1</int>
+        </entry>
+      </elementAttributes>
+      <pos x="280" y="220"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Out</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Label</string>
+          <string>B</string>
+        </entry>
+        <entry>
+          <string>Bits</string>
+          <int>2</int>
+        </entry>
+      </elementAttributes>
+      <pos x="320" y="220"/>
+    </visualElement>
+  </visualElements>
+  <wires>
+    <wire>
+      <p1 x="280" y="220"/>
+      <p2 x="320" y="220"/>
+    </wire>
+  </wires>
+</circuit>
\ No newline at end of file