diff --git a/src/plugins/mcusupport/mcupackage.h b/src/plugins/mcusupport/mcupackage.h
index e53a4d96725..585ddc36bc9 100644
--- a/src/plugins/mcusupport/mcupackage.h
+++ b/src/plugins/mcusupport/mcupackage.h
@@ -140,3 +140,5 @@ private:
 
 } // namespace Internal
 } // namespace McuSupport
+
+Q_DECLARE_METATYPE(McuSupport::Internal::McuToolChainPackage::ToolChainType)
diff --git a/src/plugins/mcusupport/mcutargetdescription.h b/src/plugins/mcusupport/mcutargetdescription.h
index e3708d46c24..8132df64faa 100644
--- a/src/plugins/mcusupport/mcutargetdescription.h
+++ b/src/plugins/mcusupport/mcutargetdescription.h
@@ -83,3 +83,5 @@ struct McuTargetDescription
 };
 
 } // namespace McuSupport::Internal::Sdk
+
+Q_DECLARE_METATYPE(McuSupport::Internal::Sdk::McuTargetDescription)