diff --git a/ph-schematron-pure/src/main/java/com/helger/schematron/pure/xpath/XPathLetVariableResolver.java b/ph-schematron-pure/src/main/java/com/helger/schematron/pure/xpath/XPathLetVariableResolver.java
index df0a36aad..bdf79cc91 100644
--- a/ph-schematron-pure/src/main/java/com/helger/schematron/pure/xpath/XPathLetVariableResolver.java
+++ b/ph-schematron-pure/src/main/java/com/helger/schematron/pure/xpath/XPathLetVariableResolver.java
@@ -30,9 +30,10 @@
 @NotThreadSafe
 public class XPathLetVariableResolver implements XPathVariableResolver
 {
-  private final ThreadLocal<ICommonsMap <QName, Object>> m_aVariables = new ThreadLocal<> () {
+  private final ThreadLocal <ICommonsMap <QName, Object>> m_aTLVariables = new ThreadLocal <> ()
+  {
     @Override
-    protected ICommonsMap <QName, Object> initialValue()
+    protected ICommonsMap <QName, Object> initialValue ()
     {
       return new CommonsHashMap <> ();
     }
@@ -48,7 +49,7 @@ public XPathLetVariableResolver (@Nullable final XPathVariableResolver aResolver
   public void setVariableValue (@Nonnull final QName aVariableName, @Nullable final Object aValue)
   {
     ValueEnforcer.notNull (aVariableName, "VariableName");
-    m_aVariables.get().put (aVariableName, aValue);
+    m_aTLVariables.get ().put (aVariableName, aValue);
   }
 
   /**
@@ -60,7 +61,7 @@ public void setVariableValue (@Nonnull final QName aVariableName, @Nullable fina
   public void removeVariable (@Nullable final QName aVariableName)
   {
     if (aVariableName != null)
-      m_aVariables.get().remove (aVariableName);
+      m_aTLVariables.get ().remove (aVariableName);
   }
 
   @Override
@@ -69,7 +70,7 @@ public Object resolveVariable (@Nullable final QName aVariableName)
     if (aVariableName != null)
     {
       // 1. variables
-      final Object result = m_aVariables.get().get (aVariableName);
+      final Object result = m_aTLVariables.get ().get (aVariableName);
       if (result != null)
         return result;
 
@@ -85,7 +86,7 @@ public Object resolveVariable (@Nullable final QName aVariableName)
   @Override
   public String toString ()
   {
-    return new ToStringGenerator (this).append ("Variables", m_aVariables)
+    return new ToStringGenerator (this).append ("Variables", m_aTLVariables.get ())
                                        .append ("DelegatedResolver", m_aDelegatedResolver)
                                        .getToString ();
   }
diff --git a/ph-schematron-pure/src/test/java/com/helger/schematron/pure/supplementary/Issue182Test.java b/ph-schematron-pure/src/test/java/com/helger/schematron/pure/supplementary/Issue182Test.java
index 0132ba7b6..e2330b97a 100644
--- a/ph-schematron-pure/src/test/java/com/helger/schematron/pure/supplementary/Issue182Test.java
+++ b/ph-schematron-pure/src/test/java/com/helger/schematron/pure/supplementary/Issue182Test.java
@@ -25,6 +25,8 @@
 import java.util.concurrent.Executors;
 import java.util.concurrent.atomic.AtomicInteger;
 
+import javax.annotation.Nonnull;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.slf4j.Logger;
@@ -51,17 +53,16 @@ public final class Issue182Test
   private static final String XML_B = "src/test/resources/external/issues/github182/testB.xml";
 
   private SchematronResourcePure m_aSCH;
-
-  final private AtomicInteger errorCount = new AtomicInteger(0);
+  private final AtomicInteger m_aErrorCount = new AtomicInteger (0);
 
   @Before
-  public void loadSchematron()
+  public void loadSchematron ()
   {
     if (m_aSCH == null)
       m_aSCH = SchematronResourcePure.fromFile (SCH);
   }
 
-  public void validateAndProduceSVRL (final File aXML) throws Exception
+  private void _validateAndProduceSVRL (@Nonnull final File aXML) throws Exception
   {
     m_aSCH.validateCompletely (new LoggingPSErrorHandler ());
 
@@ -69,50 +70,52 @@ public void validateAndProduceSVRL (final File aXML) throws Exception
     final SchematronOutputType aSVRL = m_aSCH.applySchematronValidationToSVRL (new FileSystemResource (aXML));
     assertNotNull (aSVRL);
     if (true)
-      LOGGER.info (aXML.getName() + " " + new SVRLMarshaller ().getAsString (aSVRL));
+      LOGGER.info (aXML.getName () + " " + new SVRLMarshaller ().getAsString (aSVRL));
 
     if (SVRLHelper.getAllFailedAssertionsAndSuccessfulReports (aSVRL).size () != 0)
-      errorCount.incrementAndGet();
+      m_aErrorCount.incrementAndGet ();
   }
 
   @Test
   public void testConcurrency () throws Exception
   {
-    int numberOfThreads = 2;
-    ExecutorService service = Executors.newFixedThreadPool (10);
-    CountDownLatch startLatch = new CountDownLatch (1);
-    CountDownLatch finishedLatch = new CountDownLatch (numberOfThreads);
-    for (int i = 0; i < numberOfThreads; i += 2) {
-      service.execute (() -> {
+    // Must be a multiple of 2
+    final int nNumberOfThreads = 10;
+    final ExecutorService aES = Executors.newFixedThreadPool (nNumberOfThreads);
+    final CountDownLatch aStartLatch = new CountDownLatch (1);
+    final CountDownLatch aFinishedLatch = new CountDownLatch (nNumberOfThreads);
+    for (int i = 0; i < nNumberOfThreads; i += 2)
+    {
+      aES.execute ( () -> {
         try
         {
-          startLatch.await ();
-          validateAndProduceSVRL (new File (XML_A));
+          aStartLatch.await ();
+          _validateAndProduceSVRL (new File (XML_A));
         }
-        catch (Exception e)
+        catch (final Exception e)
         {
           LOGGER.error ("Error validating XML A", e);
         }
-        finishedLatch.countDown ();
+        aFinishedLatch.countDown ();
       });
-      service.execute(() -> {
+      aES.execute ( () -> {
         try
         {
-          startLatch.await ();
-          validateAndProduceSVRL (new File (XML_B));
+          aStartLatch.await ();
+          _validateAndProduceSVRL (new File (XML_B));
         }
-        catch (Exception e)
+        catch (final Exception e)
         {
           LOGGER.error ("Error validating XML B", e);
         }
-        finishedLatch.countDown ();
+        aFinishedLatch.countDown ();
       });
     }
     // All threads are waiting on startLatch, release them all together
-    startLatch.countDown ();
+    aStartLatch.countDown ();
     // Wait until all threads are finished
-    finishedLatch.await ();
+    aFinishedLatch.await ();
 
-    assertEquals (0, errorCount.get());
+    assertEquals (0, m_aErrorCount.get ());
   }
 }