diff --git a/include/sfx2/devtools/DocumentModelTreeHandler.hxx b/include/sfx2/devtools/DocumentModelTreeHandler.hxx
index 5b752b172b4e..03f5ed274aa4 100644
--- a/include/sfx2/devtools/DocumentModelTreeHandler.hxx
+++ b/include/sfx2/devtools/DocumentModelTreeHandler.hxx
@@ -28,13 +28,7 @@ private:
 
 public:
     DocumentModelTreeHandler(std::unique_ptr<weld::TreeView>& pDocumentModelTree,
-                             css::uno::Reference<css::uno::XInterface> const& xDocument)
-        : mpDocumentModelTree(pDocumentModelTree)
-        , mxDocument(xDocument)
-    {
-        mpDocumentModelTree->connect_expanding(
-            LINK(this, DocumentModelTreeHandler, ExpandingHandler));
-    }
+                             css::uno::Reference<css::uno::XInterface> const& xDocument);
 
     DECL_LINK(ExpandingHandler, const weld::TreeIter&, bool);
 
diff --git a/include/sfx2/devtools/ObjectInspectorTreeHandler.hxx b/include/sfx2/devtools/ObjectInspectorTreeHandler.hxx
index aa6e353e6549..69769cc261d9 100644
--- a/include/sfx2/devtools/ObjectInspectorTreeHandler.hxx
+++ b/include/sfx2/devtools/ObjectInspectorTreeHandler.hxx
@@ -26,13 +26,7 @@ private:
 
 public:
     ObjectInspectorTreeHandler(std::unique_ptr<weld::TreeView>& pObjectInspectorTree,
-                               std::unique_ptr<weld::Label>& pClassNameLabel)
-        : mpObjectInspectorTree(pObjectInspectorTree)
-        , mpClassNameLabel(pClassNameLabel)
-    {
-        mpObjectInspectorTree->connect_expanding(
-            LINK(this, ObjectInspectorTreeHandler, ExpandingHandler));
-    }
+                               std::unique_ptr<weld::Label>& pClassNameLabel);
 
     DECL_LINK(ExpandingHandler, const weld::TreeIter&, bool);
 
diff --git a/sfx2/source/devtools/DocumentModelTreeHandler.cxx b/sfx2/source/devtools/DocumentModelTreeHandler.cxx
index e29ce03ad47a..a170e3551bc5 100644
--- a/sfx2/source/devtools/DocumentModelTreeHandler.cxx
+++ b/sfx2/source/devtools/DocumentModelTreeHandler.cxx
@@ -566,6 +566,15 @@ public:
 
 } // end anonymous namespace
 
+DocumentModelTreeHandler::DocumentModelTreeHandler(
+    std::unique_ptr<weld::TreeView>& pDocumentModelTree,
+    css::uno::Reference<css::uno::XInterface> const& xDocument)
+    : mpDocumentModelTree(pDocumentModelTree)
+    , mxDocument(xDocument)
+{
+    mpDocumentModelTree->connect_expanding(LINK(this, DocumentModelTreeHandler, ExpandingHandler));
+}
+
 uno::Reference<uno::XInterface> DocumentModelTreeHandler::getObjectByID(OUString const& rID)
 {
     uno::Reference<uno::XInterface> xObject;
diff --git a/sfx2/source/devtools/ObjectInspectorTreeHandler.cxx b/sfx2/source/devtools/ObjectInspectorTreeHandler.cxx
index d69f8130f82b..98e92fb46cbf 100644
--- a/sfx2/source/devtools/ObjectInspectorTreeHandler.cxx
+++ b/sfx2/source/devtools/ObjectInspectorTreeHandler.cxx
@@ -428,6 +428,16 @@ public:
 
 } // end anonymous namespace
 
+ObjectInspectorTreeHandler::ObjectInspectorTreeHandler(
+    std::unique_ptr<weld::TreeView>& pObjectInspectorTree,
+    std::unique_ptr<weld::Label>& pClassNameLabel)
+    : mpObjectInspectorTree(pObjectInspectorTree)
+    , mpClassNameLabel(pClassNameLabel)
+{
+    mpObjectInspectorTree->connect_expanding(
+        LINK(this, ObjectInspectorTreeHandler, ExpandingHandler));
+}
+
 IMPL_LINK(ObjectInspectorTreeHandler, ExpandingHandler, weld::TreeIter const&, rParent, bool)
 {
     OUString sID = mpObjectInspectorTree->get_id(rParent);