diff --git a/build/build.xml b/build/build.xml
index 297d967..cebbe64 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -17,6 +17,10 @@
     </build-test>
   </target>
 
+  <target name="analyser" description="run errors analyser">
+    <build-test name="errors" depends="boost"/>
+  </target>
+
   <target name="bench" description="build compilation benchmark">
     <build-app name="turtle_bench" mode="all">
       <includepath path="${applications.dir}/turtle_bench"/>
diff --git a/src/tests/errors_test/mismatch_type_in_returns_action.cpp b/src/tests/errors_test/mismatch_type_in_returns_action.cpp
new file mode 100644
index 0000000..36fc444
--- /dev/null
+++ b/src/tests/errors_test/mismatch_type_in_returns_action.cpp
@@ -0,0 +1,22 @@
+//
+//  Copyright Mathieu Champlon 2011
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <turtle/mock.hpp>
+
+namespace
+{
+    MOCK_CLASS( cl )
+    {
+        MOCK_METHOD_EXT( m, 0, int(), m ) // add another test with void() and another with std::string()
+    };
+    void test_case()
+    {
+        cl c;
+        MOCK_EXPECT( c, m ).returns( "42" );
+    }
+}