diff --git a/scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/HgHealthCheck.java b/scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/HgHealthCheck.java
new file mode 100644
index 0000000000..53a9c242b4
--- /dev/null
+++ b/scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/HgHealthCheck.java
@@ -0,0 +1,100 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. Neither the name of SCM-Manager;
+ * nor the names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.repository;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.inject.Inject;
+
+import sonia.scm.plugin.ext.Extension;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.File;
+
+/**
+ * Simple {@link HealthCheck} for mercurial repositories.
+ *
+ * @author Sebastian Sdorra
+ * @since 1.39
+ */
+@Extension
+public final class HgHealthCheck extends DirectoryHealthCheck
+{
+
+  /** Field description */
+  private static final HealthCheckFailure COULD_NOT_FIND_DOT_HG_DIRECTORY =
+    new HealthCheckFailure("6bOdhOXpB1", "Could not find .hg directory",
+      "The mercurial repository does not contain .hg directory.");
+
+  /** Field description */
+  private static final String DOT_HG = ".hg";
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param repositoryManager
+   */
+  @Inject
+  public HgHealthCheck(RepositoryManager repositoryManager)
+  {
+    super(repositoryManager);
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param repository
+   * @param directory
+   *
+   * @return
+   */
+  @Override
+  protected HealthCheckResult check(Repository repository, File directory)
+  {
+    HealthCheckResult result = HealthCheckResult.healthy();
+    File dotHgDirectory = new File(directory, DOT_HG);
+
+    if (!dotHgDirectory.exists())
+    {
+      result = HealthCheckResult.unhealthy(COULD_NOT_FIND_DOT_HG_DIRECTORY);
+    }
+
+    return result;
+  }
+}