diff --git a/java_console/ui/src/main/java/com/rusefi/ui/livedata/SourceCodePainter.java b/java_console/ui/src/main/java/com/rusefi/ui/livedata/SourceCodePainter.java
index c6e1d3b42a..a74e764b98 100644
--- a/java_console/ui/src/main/java/com/rusefi/ui/livedata/SourceCodePainter.java
+++ b/java_console/ui/src/main/java/com/rusefi/ui/livedata/SourceCodePainter.java
@@ -3,6 +3,16 @@ package com.rusefi.ui.livedata;
 import java.awt.*;
 
 public interface SourceCodePainter {
+    SourceCodePainter VOID = new SourceCodePainter() {
+        @Override
+        public void paintBackground(Color color, Range range) {
+        }
+
+        @Override
+        public void paintForeground(Color color, Range range) {
+        }
+    };
+
     void paintBackground(Color color, Range range);
 
     void paintForeground(Color color, Range range);
diff --git a/java_console/ui/src/main/java/com/rusefi/ui/livedata/VariableValueSource.java b/java_console/ui/src/main/java/com/rusefi/ui/livedata/VariableValueSource.java
index c318101aa3..6517737b33 100644
--- a/java_console/ui/src/main/java/com/rusefi/ui/livedata/VariableValueSource.java
+++ b/java_console/ui/src/main/java/com/rusefi/ui/livedata/VariableValueSource.java
@@ -1,5 +1,7 @@
 package com.rusefi.ui.livedata;
 
 public interface VariableValueSource {
+    VariableValueSource VOID = name -> null;
+
     Object getValue(String name);
 }
diff --git a/java_console/ui/src/test/java/com/rusefi/ui/livedata/LiveDataParserTest.java b/java_console/ui/src/test/java/com/rusefi/ui/livedata/LiveDataParserTest.java
index 8c12276ed0..16b5344470 100644
--- a/java_console/ui/src/test/java/com/rusefi/ui/livedata/LiveDataParserTest.java
+++ b/java_console/ui/src/test/java/com/rusefi/ui/livedata/LiveDataParserTest.java
@@ -1,14 +1,19 @@
 package com.rusefi.ui.livedata;
 
 import com.rusefi.livedata.LiveDataParserPanel;
+import com.rusefi.livedata.LiveDataView;
+import com.rusefi.livedata.ParseResult;
 import org.antlr.v4.runtime.tree.ParseTree;
 import org.antlr.v4.runtime.tree.ParseTreeWalker;
 import org.junit.Test;
 
 import java.awt.*;
+import java.io.IOException;
+import java.net.URISyntaxException;
 import java.util.Map;
 import java.util.TreeMap;
 
+import static org.junit.Assert.assertTrue;
 import static org.mockito.Matchers.any;
 import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.*;
@@ -50,4 +55,14 @@ public class LiveDataParserTest {
         verify(painter).paintBackground(eq(Color.red), any());
         verify(painter).paintBackground(eq(Color.green), any());
     }
+
+    @Test
+    public void testConfigurationInRealSourceCode() throws IOException, URISyntaxException {
+        String sourceCode = LiveDataParserPanel.getContent(LiveDataParserPanel.class, LiveDataView.BOOST_CONTROL.getFileName());
+        assertTrue(sourceCode.length() > 100);
+
+        ParseTree tree = LiveDataParserPanel.getParseTree(sourceCode);
+        ParseResult parseResult = LiveDataParserPanel.applyVariables(VariableValueSource.VOID, sourceCode, SourceCodePainter.VOID, tree);
+        assertTrue(!parseResult.getConfigTokens().isEmpty());
+    }
 }