diff --git a/base/src/main/java/de/staropensource/sosengine/base/EngineConfiguration.java b/base/src/main/java/de/staropensource/sosengine/base/EngineConfiguration.java
index 6dd11cc8..36219b79 100644
--- a/base/src/main/java/de/staropensource/sosengine/base/EngineConfiguration.java
+++ b/base/src/main/java/de/staropensource/sosengine/base/EngineConfiguration.java
@@ -374,6 +374,8 @@ public final class EngineConfiguration implements SubsystemConfiguration {
 
     /**
      * Clears {@code instance}. Used in unit tests.
+     *
+     * @since 1-alpha1
      */
     private static void clearInstance() {
         instance = null;
diff --git a/base/src/test/java/de/staropensource/sosengine/base/srctests/EngineTest.java b/base/src/test/java/de/staropensource/sosengine/base/srctests/EngineTest.java
deleted file mode 100644
index 20bcab6a..00000000
--- a/base/src/test/java/de/staropensource/sosengine/base/srctests/EngineTest.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package de.staropensource.sosengine.base.srctests;
-
-import de.staropensource.sosengine.base.Engine;
-import de.staropensource.sosengine.unittests.UnitLogger;
-import org.junit.jupiter.api.DisplayName;
-import org.junit.jupiter.api.Test;
-
-import static org.junit.jupiter.api.Assertions.*;
-
-/**
- * Tests the class {@link EngineTest}.
- */
-@SuppressWarnings("unused")
-@DisplayName("Engine")
-class EngineTest {
-    /**
-     * The {@link UnitLogger} for this instance.
-     */
-    private final UnitLogger logger = new UnitLogger(getClass());
-
-    /**
-     * Tests the constructor.
-     */
-    @Test
-    @DisplayName("Constructor")
-    void testConstructor() {
-        logger.testCall("testConstructor");
-
-        assertNotEquals(new Engine(), null, "Engine should not be null");
-    }
-}