diff --git a/alib2algo/test-src/grammar/convert/GrammarCFGtoPDATest.cpp b/alib2algo/test-src/grammar/convert/GrammarCFGtoPDATest.cpp
index 5717c92656ccf0b1e5e5fef59e9a1275a2d5bd0d..4959feeb4ecf3372cc0f60e41707bf7520323e69 100644
--- a/alib2algo/test-src/grammar/convert/GrammarCFGtoPDATest.cpp
+++ b/alib2algo/test-src/grammar/convert/GrammarCFGtoPDATest.cpp
@@ -88,7 +88,7 @@ void GrammarCFGtoPDATest::testBottomUp()
 
 		automaton::State q('q');
 		automaton::State r('r');
-		alphabet::Symbol bots(alphabet::Symbol(alphabet::BottomOfTheStackSymbol::BOTTOM_OF_THE_STACK));
+		alphabet::Symbol bots(alphabet::Symbol{alphabet::BottomOfTheStackSymbol::BOTTOM_OF_THE_STACK});
 
 		automaton::NPDA pda(q, bots);
 		pda.addState(r);