diff --git a/eeschema/dialogs/dialog_symbol_chooser.cpp b/eeschema/dialogs/dialog_symbol_chooser.cpp
index b0b687ef49..d509af1e4e 100644
--- a/eeschema/dialogs/dialog_symbol_chooser.cpp
+++ b/eeschema/dialogs/dialog_symbol_chooser.cpp
@@ -31,6 +31,7 @@
 #include <widgets/footprint_preview_widget.h>
 #include <widgets/footprint_select_widget.h>
 #include <widgets/symbol_preview_widget.h>
+
 #include <wx/button.h>
 #include <wx/checkbox.h>
 #include <wx/sizer.h>
diff --git a/eeschema/symbol_tree_model_adapter.h b/eeschema/symbol_tree_model_adapter.h
index 21c5207705..74114d58fb 100644
--- a/eeschema/symbol_tree_model_adapter.h
+++ b/eeschema/symbol_tree_model_adapter.h
@@ -27,6 +27,8 @@
 class SYMBOL_LIBRARY_ADAPTER;
 class SCH_BASE_FRAME;
 
+class wxTimer;
+
 class SYMBOL_TREE_MODEL_ADAPTER : public LIB_TREE_MODEL_ADAPTER
 {
 public: