diff --git a/alib2algo/test-src/regexp/simplify/RegExpOptimizeTest.cpp b/alib2algo/test-src/regexp/simplify/RegExpOptimizeTest.cpp
index b3b23fcfa233c1f5af5b3fb68b557998cbb08567..bc73260e63746088afb58db0ca1fdb93a68545b0 100644
--- a/alib2algo/test-src/regexp/simplify/RegExpOptimizeTest.cpp
+++ b/alib2algo/test-src/regexp/simplify/RegExpOptimizeTest.cpp
@@ -70,7 +70,7 @@ void RegExpOptimizeTest::testOptimize() {
 void RegExpOptimizeTest::testOptimizeTemplated() {
 	regexp::UnboundedRegExpSymbol < char > a ( 'a' );
 	regexp::UnboundedRegExpSymbol < char > b ( 'b' );
-//	regexp::UnboundedRegExpSymbol < char > z ( 'z' );
+	regexp::UnboundedRegExpSymbol < char > z ( 'z' );
 
 	{
 		regexp::UnboundedRegExpAlternation < char > alt;
@@ -140,20 +140,38 @@ void RegExpOptimizeTest::testOptimizeTemplated() {
 
 		CPPUNIT_ASSERT ( regexpRes == res );
 	}
-/*	{
-		std::string input = "a z + a b* b z";
-		regexp::UnboundedRegExp < > regexp( static_cast<const regexp::UnboundedRegExp < > &>( alib::StringDataFactory::fromString<regexp::RegExp>(input).getData() ) );
+	{
+		regexp::UnboundedRegExpConcatenation < char > con1;
+		con1.appendElement ( a );
+		con1.appendElement ( z );
 
-		regexp::UnboundedRegExp < > res = regexp::simplify::RegExpOptimize::optimize(regexp);
+		regexp::UnboundedRegExpIteration < char > iter { b };
+		regexp::UnboundedRegExpConcatenation < char > con2;
+		con2.appendElement ( a );
+		con2.appendElement ( iter );
+		con2.appendElement ( b );
+		con2.appendElement ( z );
 
-		std::string inputRes = "a b* z";
-		regexp::UnboundedRegExp < > regexpRes( static_cast<const regexp::UnboundedRegExp < > &>( alib::StringDataFactory::fromString<regexp::RegExp>(inputRes).getData() ) );
+		regexp::UnboundedRegExpAlternation < char > alt1;
+		alt1.appendElement ( con1 );
+		alt1.appendElement ( con2);
+
+		regexp::UnboundedRegExp < char > regexp( regexp::UnboundedRegExpStructure < char > { alt1 } );
+
+		regexp::UnboundedRegExp < char > res = regexp::simplify::RegExpOptimize::optimize(regexp);
+
+		regexp::UnboundedRegExpConcatenation < char > con3;
+		con3.appendElement ( a );
+		con3.appendElement ( iter );
+		con3.appendElement ( z );
+
+		regexp::UnboundedRegExp < char > regexpRes( regexp::UnboundedRegExpStructure < char > { con3 } );
 
 		std::cout << res << std::endl;
 		std::cout << regexpRes << std::endl;
 
 		CPPUNIT_ASSERT ( regexpRes == res );
-	}*/
+	}
 
 }