diff --git a/monticore-generator/src/main/java/de/monticore/codegen/parser/antlr/Grammar2Antlr.java b/monticore-generator/src/main/java/de/monticore/codegen/parser/antlr/Grammar2Antlr.java
index 67c8bc9238..8b73f69d24 100644
--- a/monticore-generator/src/main/java/de/monticore/codegen/parser/antlr/Grammar2Antlr.java
+++ b/monticore-generator/src/main/java/de/monticore/codegen/parser/antlr/Grammar2Antlr.java
@@ -371,7 +371,7 @@ public void handle(ASTConstantGroup ast) {
         } else if (grammarInfo.getKeywordRules().contains(x.getName())) {
           addToCodeSection(parserHelper.getKeyRuleName(x.getName()));
         } else {
-          addToCodeSection("'" + x.getName() + "'");
+          addToCodeSection(parserHelper.getLexSymbolName(x.getName()));
         }
 
         if (embeddedJavaCode) {
diff --git a/monticore-test/it/src/main/grammars/mc/feature/constantgroups/SpecialLexerTokensInConstantGroup.mc4 b/monticore-test/it/src/main/grammars/mc/feature/constantgroups/SpecialLexerTokensInConstantGroup.mc4
new file mode 100644
index 0000000000..a2eb7bc75e
--- /dev/null
+++ b/monticore-test/it/src/main/grammars/mc/feature/constantgroups/SpecialLexerTokensInConstantGroup.mc4
@@ -0,0 +1,7 @@
+/* (c) https://github.com/MontiCore/monticore */
+package mc.feature.constantgroups;
+
+grammar SpecialLexerTokensInConstantGroup {
+    Start = ALTQUESTION bar:["?" | "!"];
+    token ALTQUESTION = '?';
+}