diff --git a/src/plugins/designer/qtcreatorintegration.cpp b/src/plugins/designer/qtcreatorintegration.cpp
index 3d8362180c2..9abc9382e98 100644
--- a/src/plugins/designer/qtcreatorintegration.cpp
+++ b/src/plugins/designer/qtcreatorintegration.cpp
@@ -62,7 +62,9 @@
 #include <memory>
 #include <optional>
 
+namespace Designer::Internal {
 Q_LOGGING_CATEGORY(log, "qtc.designer", QtWarningMsg);
+} // namespace Designer::Internal
 
 using namespace Designer::Internal;
 using namespace CPlusPlus;
diff --git a/src/plugins/modeleditor/modelindexer.cpp b/src/plugins/modeleditor/modelindexer.cpp
index a04baf06b66..391e30441df 100644
--- a/src/plugins/modeleditor/modelindexer.cpp
+++ b/src/plugins/modeleditor/modelindexer.cpp
@@ -25,13 +25,13 @@
 #include <QLoggingCategory>
 #include <QPointer>
 
-Q_LOGGING_CATEGORY(log, "qtc.modeleditor.modelindexer", QtWarningMsg)
-
 using namespace ProjectExplorer;
 using namespace Utils;
 
 namespace ModelEditor::Internal {
 
+Q_LOGGING_CATEGORY(log, "qtc.modeleditor.modelindexer", QtWarningMsg)
+
 class QueuedFile
 {
     friend size_t qHash(const QueuedFile &queuedFile);