diff --git a/cpg-language-cxx/src/main/kotlin/de/fraunhofer/aisec/cpg/frontends/cxx/CPPLanguage.kt b/cpg-language-cxx/src/main/kotlin/de/fraunhofer/aisec/cpg/frontends/cxx/CPPLanguage.kt
index 6cd6312b0d..04c4bff6d4 100644
--- a/cpg-language-cxx/src/main/kotlin/de/fraunhofer/aisec/cpg/frontends/cxx/CPPLanguage.kt
+++ b/cpg-language-cxx/src/main/kotlin/de/fraunhofer/aisec/cpg/frontends/cxx/CPPLanguage.kt
@@ -38,7 +38,7 @@ import de.fraunhofer.aisec.cpg.passes.inference.startInference
 import org.neo4j.ogm.annotation.Transient
 
 /** The C++ language. */
-class CPPLanguage :
+open class CPPLanguage :
     CLanguage(),
     HasDefaultArguments,
     HasTemplates,