diff --git a/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_main_type_filter_widget.h b/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_main_type_filter_widget.h
index 36ef20c4b..b085ec3ea 100644
--- a/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_main_type_filter_widget.h
+++ b/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_main_type_filter_widget.h
@@ -7,6 +7,7 @@
 #ifndef VISUAL_DATABASE_DISPLAY_MAIN_TYPE_FILTER_WIDGET_H
 #define VISUAL_DATABASE_DISPLAY_MAIN_TYPE_FILTER_WIDGET_H
 
+#include <QMap>
 #include <QWidget>
 
 class FilterTreeModel;
diff --git a/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_name_filter_widget.h b/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_name_filter_widget.h
index 804ff4652..e318e096e 100644
--- a/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_name_filter_widget.h
+++ b/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_name_filter_widget.h
@@ -7,6 +7,7 @@
 #ifndef VISUAL_DATABASE_DISPLAY_NAME_FILTER_WIDGET_H
 #define VISUAL_DATABASE_DISPLAY_NAME_FILTER_WIDGET_H
 
+#include <QMap>
 #include <QWidget>
 
 class AbstractTabDeckEditor;
diff --git a/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_set_filter_widget.h b/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_set_filter_widget.h
index 80bd46265..b2002f9f0 100644
--- a/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_set_filter_widget.h
+++ b/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_set_filter_widget.h
@@ -7,6 +7,7 @@
 #ifndef VISUAL_DATABASE_DISPLAY_SET_FILTER_WIDGET_H
 #define VISUAL_DATABASE_DISPLAY_SET_FILTER_WIDGET_H
 
+#include <QMap>
 #include <QWidget>
 
 class QHBoxLayout;
diff --git a/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_sub_type_filter_widget.h b/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_sub_type_filter_widget.h
index e124f540f..b35cf0d55 100644
--- a/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_sub_type_filter_widget.h
+++ b/cockatrice/src/interface/widgets/visual_database_display/visual_database_display_sub_type_filter_widget.h
@@ -7,6 +7,7 @@
 #ifndef VISUAL_DATABASE_DISPLAY_SUB_TYPE_FILTER_WIDGET_H
 #define VISUAL_DATABASE_DISPLAY_SUB_TYPE_FILTER_WIDGET_H
 
+#include <QMap>
 #include <QWidget>
 
 class FilterTreeModel;