diff --git a/test-case/src/main/java/pkg/UsingGetStackTrace.java b/test-case/src/main/java/pkg/UsingGetStackTrace.java
index e0abafc7..feb0b14a 100644
--- a/test-case/src/main/java/pkg/UsingGetStackTrace.java
+++ b/test-case/src/main/java/pkg/UsingGetStackTrace.java
@@ -8,6 +8,6 @@ public class UsingGetStackTrace {
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
     void method(RuntimeException ex) {
-        logger.error("Failed to determine The Answer to Life, The Universe and Everything; {}", 27, ex.getStackTrace());
+        logger.error("Failed to determine The Answer to Life, The Universe and Everything: {}; cause: {}", 27, ex.getStackTrace());
     }
 }
diff --git a/test-case/src/test/java/jp/skypencil/findbugs/slf4j/BugInstanceMatcher.java b/test-case/src/test/java/jp/skypencil/findbugs/slf4j/BugInstanceMatcher.java
deleted file mode 100644
index e36aa0c0..00000000
--- a/test-case/src/test/java/jp/skypencil/findbugs/slf4j/BugInstanceMatcher.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package jp.skypencil.findbugs.slf4j;
-
-import edu.umd.cs.findbugs.BugInstance;
-import java.util.function.Predicate;
-import org.hamcrest.BaseMatcher;
-import org.hamcrest.Description;
-
-/**
- * Hamcrest matcher for FindBugs (now SpotBugs) {@link BugInstance}.
- *
- * @author Michael Vorburger.ch
- */
-public final class BugInstanceMatcher extends BaseMatcher<BugInstance> {
-
-    private final Predicate<BugInstance> predicate;
-
-    public BugInstanceMatcher(Predicate<BugInstance> predicate) {
-        this.predicate = predicate;
-    }
-
-    @Override
-    public final boolean matches(Object item) {
-        return predicate.test((BugInstance) item);
-    }
-
-    @Override
-    public void describeTo(Description description) {
-        description.appendText("BugInstance must match expected");
-    }
-
-}
diff --git a/test-case/src/test/java/jp/skypencil/findbugs/slf4j/UsingGetStackTraceTest.java b/test-case/src/test/java/jp/skypencil/findbugs/slf4j/UsingGetStackTraceTest.java
index a3f25361..2d2651dd 100644
--- a/test-case/src/test/java/jp/skypencil/findbugs/slf4j/UsingGetStackTraceTest.java
+++ b/test-case/src/test/java/jp/skypencil/findbugs/slf4j/UsingGetStackTraceTest.java
@@ -1,10 +1,11 @@
 package jp.skypencil.findbugs.slf4j;
 
-import com.youdevise.fbplugins.tdd4fb.DetectorAssert;
-import edu.umd.cs.findbugs.BugReporter;
-import edu.umd.cs.findbugs.Detector;
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.collect.Multimap;
+import java.util.Collections;
+import java.util.Map;
 import org.junit.jupiter.api.Test;
-import pkg.UsingGetStackTrace;
 
 /**
  * Test for {@link ManualGetStackTraceDetector}.
@@ -15,11 +16,10 @@ public class UsingGetStackTraceTest {
 
     @Test
     public void testExceptionMethods() throws Exception {
-        BugReporter bugReporter = DetectorAssert.bugReporterForTesting();
-        Detector detector = new ManualGetStackTraceDetector(bugReporter);
-        DetectorAssert.assertNoBugsReported(UsingGetStackTrace.class, detector, bugReporter);
-        DetectorAssert.assertBugReported(UsingGetStackTrace.class, detector, bugReporter, new BugInstanceMatcher(
-                bugInstance -> bugInstance.getBugPattern().getAbbrev().equals("SLF4J_GET_STACK_TRACE")));
+        Map<String, Integer> expected = Collections.singletonMap("SLF4J_GET_STACK_TRACE", 1);
+        Multimap<String, String> longMessages = new XmlParser().expect(pkg.UsingGetStackTrace.class, expected);
+        assertThat(longMessages).containsEntry("SLF4J_GET_STACK_TRACE",
+                "Do not have use Throwable#getStackTrace. It is enough to provide throwable instance as the last argument, then binding will log its message.");
     }
 
 }